The Pohozaev identity for the fractional Laplacian
|
|
- Ουρανία Θεοδοσίου
- 5 χρόνια πριν
- Προβολές:
Transcript
1 The Pohozaev identity for the fractional Laplacian Xavier Ros-Oton Departament Matemàtica Aplicada I, Universitat Politècnica de Catalunya (joint work with Joaquim Serra) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
2 Outline of the talk The classical Pohozaev identity; applications The Dirichlet semilinear problem for the fractional Laplacian The Pohozaev identity for the fractional Laplacian Applications Sketch of the proof Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February 013 / 18
3 The classical Pohozaev identity bounded Lipschitz domain, u = f (u) in u = 0 on, (1) Theorem (Pohozaev) ( n) u f (u)dx + n F (u)dx = u (x ν)dσ Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
4 Applications of the classical Pohozaev identity ( n) u f (u)dx + n F (u)dx = u (x ν)dσ Nonexistence of solutions: critical exponent u = u n+ n Ground states in R n : monotonicity formulas, estimates Radial symmetry: proof of P.-L. Lions combining the Pohozaev identity with the isoperimetric inequality Stable solutions: uniqueness, H 1 interior regularity etc. Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
5 Proof of the classical Pohozaev identity First note that (x u) = u + x ( u). Then, integrating by parts twice and using that u 0 on, we obtain (x u) u = u u + u x ( u) + (x u)( u ν)dσ = ( n) u u (x u) u + u (x ν)dσ We have used that u ν = u on. Finally, since u = f (u), then (x u) u = x F (u) = n F (u), and the identity follows. Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
6 The Dirichlet semilinear problem with ( ) s bounded C 1,1 domain, δ(x) := dist (x, ), f C 1 ( ) s u = f (u) in u = 0 in R n \, ( ) s u = g Theorem (X.R., J. Serra) (i) u C s (R n ) (ii) u/δ s C α () (iii) [u] C β (B ρ/ ) Cρs β u 0 B ρ B ρ/ (iv) [ u/δ s] C β (B ρ/ ) Cρα β Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
7 The Pohozaev identity for the fractional Laplacian bounded C 1,1 domain, ( ) s u = f (u) in u = 0 in R n \, Theorem (X. R., J. Serra) Denote δ(x) := dist (x, ). Then u/δ s C α () and ( u ) (s n) uf (u)dx + n F (u)dx = Γ(1 + s) (x ν)dσ, δ s where Γ is the gamma function. Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
8 Corollary: nonexistence results bounded C 1,1 domain, ( ) s u = f (u) in u = 0 in R n \, Corollary Assume that is star-shaped and F (t) < n s n t f (t) for all t. Then the problem admits no nontrivial solution. For example, for f (u) = u p we obtain nonexistence for p n+s n s. For positive solutions, this was done by [Fall-Weth, 1] with moving planes. Existence for subcritical p by [Servadei-Valdinoci, 1]. Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
9 Pohozaev identity with ( ) s Proposition (X. R., J. Serra) Assume 1 bounded C 1,1 domain u C s (R n ), u 0 outside, u/δ s C α () 3 Interior C β estimates for u and u/δ s, β < 1 + s 4 ( ) s u is bounded in Then (x u)( ) s u = s n u( ) s u Γ(1 + s) ( u δ s ) (x ν) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
10 Main consequences Changing the origin in our identity, we deduce the following Theorem (X. R., J. Serra) Under the same hypotheses of the Proposition, ( ) s u v xi = u xi ( ) s v + Γ(1 + s) u v δ s δ s ν i It has a local boundary term! Note the contrast with the nonlocal flux in the formula for f (x, u) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
11 Sketch of the Proof (Star-shaped domains) 1 u λ (x) = u(λx) (x u)( ) s u = d dλ u λ ( ) s u star-shaped u λ vanishes outside for λ > 1 u λ ( ) s u = ( ) s uλ ( ) s u R n Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
12 R n ( ) s uλ ( ) s u = λ s where w = ( ) s u. Therefore, R n ( ( ) s u ) (λx)( ) s u(x) dx = λ R s w(λx)w(x) dx n = λ s n w(λ 1 y)w(λ 1 y) dy R n (x u)( ) s u = s n w + 1 d R dλ n R n w λ w 1/λ where w λ (x) = w(λx). Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
13 R n ( ) s uλ ( ) s u = λ s where w = ( ) s u. Therefore, (x u)( ) s u = s n where w λ (x) = w(λx). R n ( ( ) s u ) (λx)( ) s u(x) dx = λ R s w(λx)w(x) dx n = λ s n w(λ 1 y)w(λ 1 y) dy R n u( ) s u + 1 d dλ R n w λ w 1/λ Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
14 What about d dλ λ=1 + R n w λ w 1/λ? Important properties: I(ϕ) = d dλ ϕ(λx)ϕ(x/λ) dx R n 1 I(ϕ) 0 since ( ) 1 ( ) 1 ϕ(λx)ϕ(x/λ)dx ϕ (λx)dx ϕ (x/λ)dx = ϕ R n R n Rn R n ψ smooth I(ψ) = 0 3 If I(ψ) = 0 I(ϕ + ψ) = I(ϕ) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
15 What about d dλ λ=1 + R n w λ w 1/λ? Important properties: I(ϕ) = d dλ ϕ(λx)ϕ(x/λ) dx R n 1 I(ϕ) 0 since ( ) 1 ( ) 1 ϕ(λx)ϕ(x/λ)dx ϕ (λx)dx ϕ (x/λ)dx = ϕ R n R n Rn R n ψ smooth I(ψ) = 0 3 If I(ψ) = 0 I(ϕ + ψ) = I(ϕ) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
16 What about d dλ λ=1 + R n w λ w 1/λ? Important properties: I(ϕ) = d dλ ϕ(λx)ϕ(x/λ) dx R n 1 I(ϕ) 0 since ( ) 1 ( ) 1 ϕ(λx)ϕ(x/λ)dx ϕ (λx)dx ϕ (x/λ)dx = ϕ R n R n Rn R n ψ smooth I(ψ) = 0 3 If I(ψ) = 0 I(ϕ + ψ) = I(ϕ) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
17 What about d dλ λ=1 + R n w λ w 1/λ? Important properties: I(ϕ) = d dλ ϕ(λx)ϕ(x/λ) dx R n 1 I(ϕ) 0 since ( ) 1 ( ) 1 ϕ(λx)ϕ(x/λ)dx ϕ (λx)dx ϕ (x/λ)dx = ϕ R n R n Rn R n ψ smooth I(ψ) = 0 3 If I(ψ) = 0 I(ϕ + ψ) = I(ϕ) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
18 What about d dλ λ=1 + R n w λ w 1/λ? We want to compute: I(w) = d dλ w λ w 1/λ R n Reduce to a 1 D calculation Use star-shaped (t, z)-coordinates (/3, z) z (1/3, z) 0 (1/, z) z x = tz, z, t > 0 d dλ w λ w 1/λ = R n d dλ (z ν)dσ(z) 0 t n 1 w(λtz)w ( tz λ ) dt Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
19 What about d dλ λ=1 + R n w λ w 1/λ? We want to compute: I(w) = d dλ w λ w 1/λ R n Reduce to a 1 D calculation Use star-shaped (t, z)-coordinates (/3, z) z (1/3, z) 0 (1/, z) z x = tz, z, t > 0 d dλ w λ w 1/λ = R n (z ν)dσ(z) d dλ 0 t n 1 w(λtz)w ( tz λ ) dt Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
20 What do we know about w = ( ) s/ u? Proposition (X. R., J. Serra) Fix z. Then, where w(tz) = ( ) s/ { u(tz) = c 1 log t 1 + c χ (0,1) (t) } u (z) + h(t) δs d dλ 0 ( t t n 1 h(λt)h dt = 0 λ) c 1 = Γ(1 + s) sin ( ) πs, and c = π π tan ( πs ) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
21 Summarising... { w(tz) = c 1 log t 1 + c χ (0,1) (t) } u (z) + h(t) δs d dλ w λ w 1/λ = (z ν)dσ(z) d ( tz ) R n dλ t n 1 w(λtz)w dt 0 λ = (z ν)dσ(z) d ( u ) ( t ) dλ δ s (z) t n 1 φ s (λt)φ s dt 0 λ u ) = (z ν)dσ(z)( δ s (z) C(s) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
22 Summarising... w(tz) = φ s (t) u (z) + h(t) δs { where φ s (t) = c 1 log t 1 + c χ (0,1) (t) } d dλ w λ w 1/λ = (z ν)dσ(z) d ( tz ) R n dλ t n 1 w(λtz)w dt 0 λ = (z ν)dσ(z) d ( u ) ( t ) dλ δ s (z) t n 1 φ s (λt)φ s dt 0 λ u ) = (z ν)dσ(z)( δ s (z) C(s) Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
23 And if the domain is not star-shaped... Key observations: 1 Pohozaev identity is quadratic in u and it comes from a bilinear identity (x u)( )s u = s n u( )s u Γ(1+s) (x u)( )s v + (x v)( )s u = u( )s v + s n v( )s u Γ(1 + s) s n every C 1,1 domain is locally star-shaped ( u δ s ) (x ν) u δ s v δ s (x ν) 3 the bilinear identity holds easily when u and v have disjoint support Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
24 And if the domain is not star-shaped... Key observations: 1 Pohozaev identity is quadratic in u and it comes from a bilinear identity (x u)( )s u = s n u( )s u Γ(1+s) (x u)( )s v + (x v)( )s u = u( )s v + s n v( )s u Γ(1 + s) s n every C 1,1 domain is locally star-shaped ( u δ s ) (x ν) u δ s v δ s (x ν) 3 the bilinear identity holds easily when u and v have disjoint support Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
25 And if the domain is not star-shaped... Key observations: 1 Pohozaev identity is quadratic in u and it comes from a bilinear identity (x u)( )s u = s n u( )s u Γ(1+s) (x u)( )s v + (x v)( )s u = u( )s v + s n v( )s u Γ(1 + s) s n every C 1,1 domain is locally star-shaped ( u δ s ) (x ν) u δ s v δ s (x ν) 3 the bilinear identity holds easily when u and v have disjoint support Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
26 And if the domain is not star-shaped... Key observations: 1 Pohozaev identity is quadratic in u and it comes from a bilinear identity (x u)( )s u = s n u( )s u Γ(1+s) (x u)( )s v + (x v)( )s u = u( )s v + s n v( )s u Γ(1 + s) s n every C 1,1 domain is locally star-shaped ( u δ s ) (x ν) u δ s v δ s (x ν) 3 the bilinear identity holds easily when u and v have disjoint support Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
27 The end Thank you! Xavier Ros-Oton (UPC) The Pohozaev identity for the fractional Laplacian BCAM, Bilbao, February / 18
Example Sheet 3 Solutions
Example Sheet 3 Solutions. i Regular Sturm-Liouville. ii Singular Sturm-Liouville mixed boundary conditions. iii Not Sturm-Liouville ODE is not in Sturm-Liouville form. iv Regular Sturm-Liouville note
Διαβάστε περισσότεραUniform Convergence of Fourier Series Michael Taylor
Uniform Convergence of Fourier Series Michael Taylor Given f L 1 T 1 ), we consider the partial sums of the Fourier series of f: N 1) S N fθ) = ˆfk)e ikθ. k= N A calculation gives the Dirichlet formula
Διαβάστε περισσότεραSolutions to Exercise Sheet 5
Solutions to Eercise Sheet 5 jacques@ucsd.edu. Let X and Y be random variables with joint pdf f(, y) = 3y( + y) where and y. Determine each of the following probabilities. Solutions. a. P (X ). b. P (X
Διαβάστε περισσότεραAreas and Lengths in Polar Coordinates
Kiryl Tsishchanka Areas and Lengths in Polar Coordinates In this section we develop the formula for the area of a region whose boundary is given by a polar equation. We need to use the formula for the
Διαβάστε περισσότεραHomework 3 Solutions
Homework 3 Solutions Igor Yanovsky (Math 151A TA) Problem 1: Compute the absolute error and relative error in approximations of p by p. (Use calculator!) a) p π, p 22/7; b) p π, p 3.141. Solution: For
Διαβάστε περισσότεραAreas and Lengths in Polar Coordinates
Kiryl Tsishchanka Areas and Lengths in Polar Coordinates In this section we develop the formula for the area of a region whose boundary is given by a polar equation. We need to use the formula for the
Διαβάστε περισσότερα2 Composition. Invertible Mappings
Arkansas Tech University MATH 4033: Elementary Modern Algebra Dr. Marcel B. Finan Composition. Invertible Mappings In this section we discuss two procedures for creating new mappings from old ones, namely,
Διαβάστε περισσότερα3.4 SUM AND DIFFERENCE FORMULAS. NOTE: cos(α+β) cos α + cos β cos(α-β) cos α -cos β
3.4 SUM AND DIFFERENCE FORMULAS Page Theorem cos(αβ cos α cos β -sin α cos(α-β cos α cos β sin α NOTE: cos(αβ cos α cos β cos(α-β cos α -cos β Proof of cos(α-β cos α cos β sin α Let s use a unit circle
Διαβάστε περισσότεραEcon 2110: Fall 2008 Suggested Solutions to Problem Set 8 questions or comments to Dan Fetter 1
Eon : Fall 8 Suggested Solutions to Problem Set 8 Email questions or omments to Dan Fetter Problem. Let X be a salar with density f(x, θ) (θx + θ) [ x ] with θ. (a) Find the most powerful level α test
Διαβάστε περισσότεραOther Test Constructions: Likelihood Ratio & Bayes Tests
Other Test Constructions: Likelihood Ratio & Bayes Tests Side-Note: So far we have seen a few approaches for creating tests such as Neyman-Pearson Lemma ( most powerful tests of H 0 : θ = θ 0 vs H 1 :
Διαβάστε περισσότεραb. Use the parametrization from (a) to compute the area of S a as S a ds. Be sure to substitute for ds!
MTH U341 urface Integrals, tokes theorem, the divergence theorem To be turned in Wed., Dec. 1. 1. Let be the sphere of radius a, x 2 + y 2 + z 2 a 2. a. Use spherical coordinates (with ρ a) to parametrize.
Διαβάστε περισσότεραMath221: HW# 1 solutions
Math: HW# solutions Andy Royston October, 5 7.5.7, 3 rd Ed. We have a n = b n = a = fxdx = xdx =, x cos nxdx = x sin nx n sin nxdx n = cos nx n = n n, x sin nxdx = x cos nx n + cos nxdx n cos n = + sin
Διαβάστε περισσότεραArithmetical applications of lagrangian interpolation. Tanguy Rivoal. Institut Fourier CNRS and Université de Grenoble 1
Arithmetical applications of lagrangian interpolation Tanguy Rivoal Institut Fourier CNRS and Université de Grenoble Conference Diophantine and Analytic Problems in Number Theory, The 00th anniversary
Διαβάστε περισσότεραLecture 26: Circular domains
Introductory lecture notes on Partial Differential Equations - c Anthony Peirce. Not to be copied, used, or revised without eplicit written permission from the copyright owner. 1 Lecture 6: Circular domains
Διαβάστε περισσότεραCongruence Classes of Invertible Matrices of Order 3 over F 2
International Journal of Algebra, Vol. 8, 24, no. 5, 239-246 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/.2988/ija.24.422 Congruence Classes of Invertible Matrices of Order 3 over F 2 Ligong An and
Διαβάστε περισσότεραC.S. 430 Assignment 6, Sample Solutions
C.S. 430 Assignment 6, Sample Solutions Paul Liu November 15, 2007 Note that these are sample solutions only; in many cases there were many acceptable answers. 1 Reynolds Problem 10.1 1.1 Normal-order
Διαβάστε περισσότεραStatistical Inference I Locally most powerful tests
Statistical Inference I Locally most powerful tests Shirsendu Mukherjee Department of Statistics, Asutosh College, Kolkata, India. shirsendu st@yahoo.co.in So far we have treated the testing of one-sided
Διαβάστε περισσότεραOrdinal Arithmetic: Addition, Multiplication, Exponentiation and Limit
Ordinal Arithmetic: Addition, Multiplication, Exponentiation and Limit Ting Zhang Stanford May 11, 2001 Stanford, 5/11/2001 1 Outline Ordinal Classification Ordinal Addition Ordinal Multiplication Ordinal
Διαβάστε περισσότεραSection 8.3 Trigonometric Equations
99 Section 8. Trigonometric Equations Objective 1: Solve Equations Involving One Trigonometric Function. In this section and the next, we will exple how to solving equations involving trigonometric functions.
Διαβάστε περισσότεραSOLUTIONS TO MATH38181 EXTREME VALUES AND FINANCIAL RISK EXAM
SOLUTIONS TO MATH38181 EXTREME VALUES AND FINANCIAL RISK EXAM Solutions to Question 1 a) The cumulative distribution function of T conditional on N n is Pr T t N n) Pr max X 1,..., X N ) t N n) Pr max
Διαβάστε περισσότεραProblem Set 3: Solutions
CMPSCI 69GG Applied Information Theory Fall 006 Problem Set 3: Solutions. [Cover and Thomas 7.] a Define the following notation, C I p xx; Y max X; Y C I p xx; Ỹ max I X; Ỹ We would like to show that C
Διαβάστε περισσότεραFinite Field Problems: Solutions
Finite Field Problems: Solutions 1. Let f = x 2 +1 Z 11 [x] and let F = Z 11 [x]/(f), a field. Let Solution: F =11 2 = 121, so F = 121 1 = 120. The possible orders are the divisors of 120. Solution: The
Διαβάστε περισσότεραPractice Exam 2. Conceptual Questions. 1. State a Basic identity and then verify it. (a) Identity: Solution: One identity is csc(θ) = 1
Conceptual Questions. State a Basic identity and then verify it. a) Identity: Solution: One identity is cscθ) = sinθ) Practice Exam b) Verification: Solution: Given the point of intersection x, y) of the
Διαβάστε περισσότεραFractional Colorings and Zykov Products of graphs
Fractional Colorings and Zykov Products of graphs Who? Nichole Schimanski When? July 27, 2011 Graphs A graph, G, consists of a vertex set, V (G), and an edge set, E(G). V (G) is any finite set E(G) is
Διαβάστε περισσότεραST5224: Advanced Statistical Theory II
ST5224: Advanced Statistical Theory II 2014/2015: Semester II Tutorial 7 1. Let X be a sample from a population P and consider testing hypotheses H 0 : P = P 0 versus H 1 : P = P 1, where P j is a known
Διαβάστε περισσότεραLecture 2. Soundness and completeness of propositional logic
Lecture 2 Soundness and completeness of propositional logic February 9, 2004 1 Overview Review of natural deduction. Soundness and completeness. Semantics of propositional formulas. Soundness proof. Completeness
Διαβάστε περισσότεραEvery set of first-order formulas is equivalent to an independent set
Every set of first-order formulas is equivalent to an independent set May 6, 2008 Abstract A set of first-order formulas, whatever the cardinality of the set of symbols, is equivalent to an independent
Διαβάστε περισσότεραSection 9.2 Polar Equations and Graphs
180 Section 9. Polar Equations and Graphs In this section, we will be graphing polar equations on a polar grid. In the first few examples, we will write the polar equation in rectangular form to help identify
Διαβάστε περισσότεραPartial Differential Equations in Biology The boundary element method. March 26, 2013
The boundary element method March 26, 203 Introduction and notation The problem: u = f in D R d u = ϕ in Γ D u n = g on Γ N, where D = Γ D Γ N, Γ D Γ N = (possibly, Γ D = [Neumann problem] or Γ N = [Dirichlet
Διαβάστε περισσότερα5. Choice under Uncertainty
5. Choice under Uncertainty Daisuke Oyama Microeconomics I May 23, 2018 Formulations von Neumann-Morgenstern (1944/1947) X: Set of prizes Π: Set of probability distributions on X : Preference relation
Διαβάστε περισσότεραHeisenberg Uniqueness pairs
Heisenberg Uniqueness pairs Philippe Jaming Bordeaux Fourier Workshop 2013, Renyi Institute Joint work with K. Kellay Heisenberg Uniqueness Pairs µ : finite measure on R 2 µ(x, y) = R 2 e i(sx+ty) dµ(s,
Διαβάστε περισσότεραderivation of the Laplacian from rectangular to spherical coordinates
derivation of the Laplacian from rectangular to spherical coordinates swapnizzle 03-03- :5:43 We begin by recognizing the familiar conversion from rectangular to spherical coordinates (note that φ is used
Διαβάστε περισσότεραThe challenges of non-stable predicates
The challenges of non-stable predicates Consider a non-stable predicate Φ encoding, say, a safety property. We want to determine whether Φ holds for our program. The challenges of non-stable predicates
Διαβάστε περισσότεραMATH423 String Theory Solutions 4. = 0 τ = f(s). (1) dτ ds = dxµ dτ f (s) (2) dτ 2 [f (s)] 2 + dxµ. dτ f (s) (3)
1. MATH43 String Theory Solutions 4 x = 0 τ = fs). 1) = = f s) ) x = x [f s)] + f s) 3) equation of motion is x = 0 if an only if f s) = 0 i.e. fs) = As + B with A, B constants. i.e. allowe reparametrisations
Διαβάστε περισσότεραSOLUTIONS TO MATH38181 EXTREME VALUES AND FINANCIAL RISK EXAM
SOLUTIONS TO MATH38181 EXTREME VALUES AND FINANCIAL RISK EXAM Solutions to Question 1 a) The cumulative distribution function of T conditional on N n is Pr (T t N n) Pr (max (X 1,..., X N ) t N n) Pr (max
Διαβάστε περισσότεραPhys460.nb Solution for the t-dependent Schrodinger s equation How did we find the solution? (not required)
Phys460.nb 81 ψ n (t) is still the (same) eigenstate of H But for tdependent H. The answer is NO. 5.5.5. Solution for the tdependent Schrodinger s equation If we assume that at time t 0, the electron starts
Διαβάστε περισσότεραSection 7.6 Double and Half Angle Formulas
09 Section 7. Double and Half Angle Fmulas To derive the double-angles fmulas, we will use the sum of two angles fmulas that we developed in the last section. We will let α θ and β θ: cos(θ) cos(θ + θ)
Διαβάστε περισσότεραSolvability of Brinkman-Forchheimer equations of flow in double-diffusive convection
Solvability of Brinkman-Forchheimer equations of flow in double-diffusive convection Mitsuharu ÔTANI Waseda University, Tokyo, JAPAN One Forum, Two Cities: Aspect of Nonlinear PDEs 29 August, 211 Mitsuharu
Διαβάστε περισσότεραIf we restrict the domain of y = sin x to [ π, π ], the restrict function. y = sin x, π 2 x π 2
Chapter 3. Analytic Trigonometry 3.1 The inverse sine, cosine, and tangent functions 1. Review: Inverse function (1) f 1 (f(x)) = x for every x in the domain of f and f(f 1 (x)) = x for every x in the
Διαβάστε περισσότεραApproximation of distance between locations on earth given by latitude and longitude
Approximation of distance between locations on earth given by latitude and longitude Jan Behrens 2012-12-31 In this paper we shall provide a method to approximate distances between two points on earth
Διαβάστε περισσότερα. (1) 2c Bahri- Bahri-Coron u = u 4/(N 2) u
. (1) Nehari c (c, 2c) 2c Bahri- Coron Bahri-Lions (2) Hénon u = x α u p α (3) u(x) u(x) + u(x) p = 0... (1) 1 Ω R N f : R R Neumann d 2 u + u = f(u) d > 0 Ω f Dirichlet 2 Ω R N ( ) Dirichlet Bahri-Coron
Διαβάστε περισσότεραIf we restrict the domain of y = sin x to [ π 2, π 2
Chapter 3. Analytic Trigonometry 3.1 The inverse sine, cosine, and tangent functions 1. Review: Inverse function (1) f 1 (f(x)) = x for every x in the domain of f and f(f 1 (x)) = x for every x in the
Διαβάστε περισσότεραFourier Series. MATH 211, Calculus II. J. Robert Buchanan. Spring Department of Mathematics
Fourier Series MATH 211, Calculus II J. Robert Buchanan Department of Mathematics Spring 2018 Introduction Not all functions can be represented by Taylor series. f (k) (c) A Taylor series f (x) = (x c)
Διαβάστε περισσότερα1 String with massive end-points
1 String with massive end-points Πρόβλημα 5.11:Θεωρείστε μια χορδή μήκους, τάσης T, με δύο σημειακά σωματίδια στα άκρα της, το ένα μάζας m, και το άλλο μάζας m. α) Μελετώντας την κίνηση των άκρων βρείτε
Διαβάστε περισσότεραIntegrals in cylindrical, spherical coordinates (Sect. 15.7)
Integrals in clindrical, spherical coordinates (Sect. 5.7 Integration in spherical coordinates. Review: Clindrical coordinates. Spherical coordinates in space. Triple integral in spherical coordinates.
Διαβάστε περισσότεραJesse Maassen and Mark Lundstrom Purdue University November 25, 2013
Notes on Average Scattering imes and Hall Factors Jesse Maassen and Mar Lundstrom Purdue University November 5, 13 I. Introduction 1 II. Solution of the BE 1 III. Exercises: Woring out average scattering
Διαβάστε περισσότεραTrigonometric Formula Sheet
Trigonometric Formula Sheet Definition of the Trig Functions Right Triangle Definition Assume that: 0 < θ < or 0 < θ < 90 Unit Circle Definition Assume θ can be any angle. y x, y hypotenuse opposite θ
Διαβάστε περισσότεραCHAPTER 101 FOURIER SERIES FOR PERIODIC FUNCTIONS OF PERIOD
CHAPTER FOURIER SERIES FOR PERIODIC FUNCTIONS OF PERIOD EXERCISE 36 Page 66. Determine the Fourier series for the periodic function: f(x), when x +, when x which is periodic outside this rge of period.
Διαβάστε περισσότεραAREAS AND LENGTHS IN POLAR COORDINATES. 25. Find the area inside the larger loop and outside the smaller loop
SECTIN 9. AREAS AND LENGTHS IN PLAR CRDINATES 9. AREAS AND LENGTHS IN PLAR CRDINATES A Click here for answers. S Click here for solutions. 8 Find the area of the region that is bounded by the given curve
Διαβάστε περισσότεραReminders: linear functions
Reminders: linear functions Let U and V be vector spaces over the same field F. Definition A function f : U V is linear if for every u 1, u 2 U, f (u 1 + u 2 ) = f (u 1 ) + f (u 2 ), and for every u U
Διαβάστε περισσότεραGlobal nonlinear stability of steady solutions of the 3-D incompressible Euler equations with helical symmetry and with no swirl
Around Vortices: from Cont. to Quantum Mech. Global nonlinear stability of steady solutions of the 3-D incompressible Euler equations with helical symmetry and with no swirl Maicon José Benvenutti (UNICAMP)
Διαβάστε περισσότεραCRASH COURSE IN PRECALCULUS
CRASH COURSE IN PRECALCULUS Shiah-Sen Wang The graphs are prepared by Chien-Lun Lai Based on : Precalculus: Mathematics for Calculus by J. Stuwart, L. Redin & S. Watson, 6th edition, 01, Brooks/Cole Chapter
Διαβάστε περισσότεραEE512: Error Control Coding
EE512: Error Control Coding Solution for Assignment on Finite Fields February 16, 2007 1. (a) Addition and Multiplication tables for GF (5) and GF (7) are shown in Tables 1 and 2. + 0 1 2 3 4 0 0 1 2 3
Διαβάστε περισσότερα9.09. # 1. Area inside the oval limaçon r = cos θ. To graph, start with θ = 0 so r = 6. Compute dr
9.9 #. Area inside the oval limaçon r = + cos. To graph, start with = so r =. Compute d = sin. Interesting points are where d vanishes, or at =,,, etc. For these values of we compute r:,,, and the values
Διαβάστε περισσότεραExercises to Statistics of Material Fatigue No. 5
Prof. Dr. Christine Müller Dipl.-Math. Christoph Kustosz Eercises to Statistics of Material Fatigue No. 5 E. 9 (5 a Show, that a Fisher information matri for a two dimensional parameter θ (θ,θ 2 R 2, can
Διαβάστε περισσότεραParametrized Surfaces
Parametrized Surfaces Recall from our unit on vector-valued functions at the beginning of the semester that an R 3 -valued function c(t) in one parameter is a mapping of the form c : I R 3 where I is some
Διαβάστε περισσότεραSecond Order RLC Filters
ECEN 60 Circuits/Electronics Spring 007-0-07 P. Mathys Second Order RLC Filters RLC Lowpass Filter A passive RLC lowpass filter (LPF) circuit is shown in the following schematic. R L C v O (t) Using phasor
Διαβάστε περισσότεραVariational Wavefunction for the Helium Atom
Technische Universität Graz Institut für Festkörperphysik Student project Variational Wavefunction for the Helium Atom Molecular and Solid State Physics 53. submitted on: 3. November 9 by: Markus Krammer
Διαβάστε περισσότεραInverse trigonometric functions & General Solution of Trigonometric Equations. ------------------ ----------------------------- -----------------
Inverse trigonometric functions & General Solution of Trigonometric Equations. 1. Sin ( ) = a) b) c) d) Ans b. Solution : Method 1. Ans a: 17 > 1 a) is rejected. w.k.t Sin ( sin ) = d is rejected. If sin
Διαβάστε περισσότεραA Two-Sided Laplace Inversion Algorithm with Computable Error Bounds and Its Applications in Financial Engineering
Electronic Companion A Two-Sie Laplace Inversion Algorithm with Computable Error Bouns an Its Applications in Financial Engineering Ning Cai, S. G. Kou, Zongjian Liu HKUST an Columbia University Appenix
Διαβάστε περισσότεραANSWERSHEET (TOPIC = DIFFERENTIAL CALCULUS) COLLECTION #2. h 0 h h 0 h h 0 ( ) g k = g 0 + g 1 + g g 2009 =?
Teko Classes IITJEE/AIEEE Maths by SUHAAG SIR, Bhopal, Ph (0755) 3 00 000 www.tekoclasses.com ANSWERSHEET (TOPIC DIFFERENTIAL CALCULUS) COLLECTION # Question Type A.Single Correct Type Q. (A) Sol least
Διαβάστε περισσότεραHOMEWORK 4 = G. In order to plot the stress versus the stretch we define a normalized stretch:
HOMEWORK 4 Problem a For the fast loading case, we want to derive the relationship between P zz and λ z. We know that the nominal stress is expressed as: P zz = ψ λ z where λ z = λ λ z. Therefore, applying
Διαβάστε περισσότεραD Alembert s Solution to the Wave Equation
D Alembert s Solution to the Wave Equation MATH 467 Partial Differential Equations J. Robert Buchanan Department of Mathematics Fall 2018 Objectives In this lesson we will learn: a change of variable technique
Διαβάστε περισσότερα= λ 1 1 e. = λ 1 =12. has the properties e 1. e 3,V(Y
Stat 50 Homework Solutions Spring 005. (a λ λ λ 44 (b trace( λ + λ + λ 0 (c V (e x e e λ e e λ e (λ e by definition, the eigenvector e has the properties e λ e and e e. (d λ e e + λ e e + λ e e 8 6 4 4
Διαβάστε περισσότεραSCITECH Volume 13, Issue 2 RESEARCH ORGANISATION Published online: March 29, 2018
Journal of rogressive Research in Mathematics(JRM) ISSN: 2395-028 SCITECH Volume 3, Issue 2 RESEARCH ORGANISATION ublished online: March 29, 208 Journal of rogressive Research in Mathematics www.scitecresearch.com/journals
Διαβάστε περισσότερα2. Let H 1 and H 2 be Hilbert spaces and let T : H 1 H 2 be a bounded linear operator. Prove that [T (H 1 )] = N (T ). (6p)
Uppsala Universitet Matematiska Institutionen Andreas Strömbergsson Prov i matematik Funktionalanalys Kurs: F3B, F4Sy, NVP 2005-03-08 Skrivtid: 9 14 Tillåtna hjälpmedel: Manuella skrivdon, Kreyszigs bok
Διαβάστε περισσότεραSrednicki Chapter 55
Srednicki Chapter 55 QFT Problems & Solutions A. George August 3, 03 Srednicki 55.. Use equations 55.3-55.0 and A i, A j ] = Π i, Π j ] = 0 (at equal times) to verify equations 55.-55.3. This is our third
Διαβάστε περισσότεραPg The perimeter is P = 3x The area of a triangle is. where b is the base, h is the height. In our case b = x, then the area is
Pg. 9. The perimeter is P = The area of a triangle is A = bh where b is the base, h is the height 0 h= btan 60 = b = b In our case b =, then the area is A = = 0. By Pythagorean theorem a + a = d a a =
Διαβάστε περισσότεραBounding Nonsplitting Enumeration Degrees
Bounding Nonsplitting Enumeration Degrees Thomas F. Kent Andrea Sorbi Università degli Studi di Siena Italia July 18, 2007 Goal: Introduce a form of Σ 0 2-permitting for the enumeration degrees. Till now,
Διαβάστε περισσότερα4.6 Autoregressive Moving Average Model ARMA(1,1)
84 CHAPTER 4. STATIONARY TS MODELS 4.6 Autoregressive Moving Average Model ARMA(,) This section is an introduction to a wide class of models ARMA(p,q) which we will consider in more detail later in this
Διαβάστε περισσότεραΑπόκριση σε Μοναδιαία Ωστική Δύναμη (Unit Impulse) Απόκριση σε Δυνάμεις Αυθαίρετα Μεταβαλλόμενες με το Χρόνο. Απόστολος Σ.
Απόκριση σε Δυνάμεις Αυθαίρετα Μεταβαλλόμενες με το Χρόνο The time integral of a force is referred to as impulse, is determined by and is obtained from: Newton s 2 nd Law of motion states that the action
Διαβάστε περισσότεραIterated trilinear fourier integrals with arbitrary symbols
Cornell University ICM 04, Satellite Conference in Harmonic Analysis, Chosun University, Gwangju, Korea August 6, 04 Motivation the Coifman-Meyer theorem with classical paraproduct(979) B(f, f )(x) :=
Διαβάστε περισσότεραHomework for 1/27 Due 2/5
Name: ID: Homework for /7 Due /5. [ 8-3] I Example D of Sectio 8.4, the pdf of the populatio distributio is + αx x f(x α) =, α, otherwise ad the method of momets estimate was foud to be ˆα = 3X (where
Διαβάστε περισσότεραMA 342N Assignment 1 Due 24 February 2016
M 342N ssignment Due 24 February 206 Id: 342N-s206-.m4,v. 206/02/5 2:25:36 john Exp john. Suppose that q, in addition to satisfying the assumptions from lecture, is an even function. Prove that η(λ = 0,
Διαβάστε περισσότεραΜηχανική Μάθηση Hypothesis Testing
ΕΛΛΗΝΙΚΗ ΔΗΜΟΚΡΑΤΙΑ ΠΑΝΕΠΙΣΤΗΜΙΟ ΚΡΗΤΗΣ Μηχανική Μάθηση Hypothesis Testing Γιώργος Μπορμπουδάκης Τμήμα Επιστήμης Υπολογιστών Procedure 1. Form the null (H 0 ) and alternative (H 1 ) hypothesis 2. Consider
Διαβάστε περισσότεραTridiagonal matrices. Gérard MEURANT. October, 2008
Tridiagonal matrices Gérard MEURANT October, 2008 1 Similarity 2 Cholesy factorizations 3 Eigenvalues 4 Inverse Similarity Let α 1 ω 1 β 1 α 2 ω 2 T =......... β 2 α 1 ω 1 β 1 α and β i ω i, i = 1,...,
Διαβάστε περισσότεραEigenvalues and eigenfunctions of a non-local boundary value problem of Sturm Liouville differential equation
Global Journal of Pure and Applied Mathematics. ISSN 0973-1768 Volume 12, Number 5 (2016, pp. 3885 3893 Research India Publications http://www.ripublication.com/gjpam.htm Eigenvalues and eigenfunctions
Διαβάστε περισσότεραThe Simply Typed Lambda Calculus
Type Inference Instead of writing type annotations, can we use an algorithm to infer what the type annotations should be? That depends on the type system. For simple type systems the answer is yes, and
Διαβάστε περισσότεραECE598: Information-theoretic methods in high-dimensional statistics Spring 2016
ECE598: Information-theoretic methods in high-dimensional statistics Spring 06 Lecture 7: Information bound Lecturer: Yihong Wu Scribe: Shiyu Liang, Feb 6, 06 [Ed. Mar 9] Recall the Chi-squared divergence
Διαβάστε περισσότεραforms This gives Remark 1. How to remember the above formulas: Substituting these into the equation we obtain with
Week 03: C lassification of S econd- Order L inear Equations In last week s lectures we have illustrated how to obtain the general solutions of first order PDEs using the method of characteristics. We
Διαβάστε περισσότεραHomework 8 Model Solution Section
MATH 004 Homework Solution Homework 8 Model Solution Section 14.5 14.6. 14.5. Use the Chain Rule to find dz where z cosx + 4y), x 5t 4, y 1 t. dz dx + dy y sinx + 4y)0t + 4) sinx + 4y) 1t ) 0t + 4t ) sinx
Διαβάστε περισσότεραLecture 21: Properties and robustness of LSE
Lecture 21: Properties and robustness of LSE BLUE: Robustness of LSE against normality We now study properties of l τ β and σ 2 under assumption A2, i.e., without the normality assumption on ε. From Theorem
Διαβάστε περισσότεραMock Exam 7. 1 Hong Kong Educational Publishing Company. Section A 1. Reference: HKDSE Math M Q2 (a) (1 + kx) n 1M + 1A = (1) =
Mock Eam 7 Mock Eam 7 Section A. Reference: HKDSE Math M 0 Q (a) ( + k) n nn ( )( k) + nk ( ) + + nn ( ) k + nk + + + A nk... () nn ( ) k... () From (), k...() n Substituting () into (), nn ( ) n 76n 76n
Διαβάστε περισσότερα1. (a) (5 points) Find the unit tangent and unit normal vectors T and N to the curve. r(t) = 3cost, 4t, 3sint
1. a) 5 points) Find the unit tangent and unit normal vectors T and N to the curve at the point P, π, rt) cost, t, sint ). b) 5 points) Find curvature of the curve at the point P. Solution: a) r t) sint,,
Διαβάστε περισσότεραSequent Calculi for the Modal µ-calculus over S5. Luca Alberucci, University of Berne. Logic Colloquium Berne, July 4th 2008
Sequent Calculi for the Modal µ-calculus over S5 Luca Alberucci, University of Berne Logic Colloquium Berne, July 4th 2008 Introduction Koz: Axiomatisation for the modal µ-calculus over K Axioms: All classical
Διαβάστε περισσότεραGeodesic Equations for the Wormhole Metric
Geodesic Equations for the Wormhole Metric Dr R Herman Physics & Physical Oceanography, UNCW February 14, 2018 The Wormhole Metric Morris and Thorne wormhole metric: [M S Morris, K S Thorne, Wormholes
Διαβάστε περισσότεραConcrete Mathematics Exercises from 30 September 2016
Concrete Mathematics Exercises from 30 September 2016 Silvio Capobianco Exercise 1.7 Let H(n) = J(n + 1) J(n). Equation (1.8) tells us that H(2n) = 2, and H(2n+1) = J(2n+2) J(2n+1) = (2J(n+1) 1) (2J(n)+1)
Διαβάστε περισσότεραMath 446 Homework 3 Solutions. (1). (i): Reverse triangle inequality for metrics: Let (X, d) be a metric space and let x, y, z X.
Math 446 Homework 3 Solutions. (1). (i): Reverse triangle inequalit for metrics: Let (X, d) be a metric space and let x,, z X. Prove that d(x, z) d(, z) d(x, ). (ii): Reverse triangle inequalit for norms:
Διαβάστε περισσότεραThe semiclassical Garding inequality
The semiclassical Garding inequality We give a proof of the semiclassical Garding inequality (Theorem 4.1 using as the only black box the Calderon-Vaillancourt Theorem. 1 Anti-Wick quantization For (q,
Διαβάστε περισσότεραSpace-Time Symmetries
Chapter Space-Time Symmetries In classical fiel theory any continuous symmetry of the action generates a conserve current by Noether's proceure. If the Lagrangian is not invariant but only shifts by a
Διαβάστε περισσότεραOscillatory integrals
Oscilltory integrls Jordn Bell jordn.bell@gmil.com Deprtment of Mthemtics, University of Toronto August, 0 Oscilltory integrls Suppose tht Φ C R d ), ψ DR d ), nd tht Φ is rel-vlued. I : 0, ) C by Iλ)
Διαβάστε περισσότεραDivergence for log concave functions
Divergence or log concave unctions Umut Caglar The Euler International Mathematical Institute June 22nd, 2013 Joint work with C. Schütt and E. Werner Outline 1 Introduction 2 Main Theorem 3 -divergence
Διαβάστε περισσότεραSection 8.2 Graphs of Polar Equations
Section 8. Graphs of Polar Equations Graphing Polar Equations The graph of a polar equation r = f(θ), or more generally F(r,θ) = 0, consists of all points P that have at least one polar representation
Διαβάστε περισσότεραENGR 691/692 Section 66 (Fall 06): Machine Learning Assigned: August 30 Homework 1: Bayesian Decision Theory (solutions) Due: September 13
ENGR 69/69 Section 66 (Fall 06): Machine Learning Assigned: August 30 Homework : Bayesian Decision Theory (solutions) Due: Septemer 3 Prolem : ( pts) Let the conditional densities for a two-category one-dimensional
Διαβάστε περισσότεραECE Spring Prof. David R. Jackson ECE Dept. Notes 2
ECE 634 Spring 6 Prof. David R. Jackson ECE Dept. Notes Fields in a Source-Free Region Example: Radiation from an aperture y PEC E t x Aperture Assume the following choice of vector potentials: A F = =
Διαβάστε περισσότεραCHAPTER 25 SOLVING EQUATIONS BY ITERATIVE METHODS
CHAPTER 5 SOLVING EQUATIONS BY ITERATIVE METHODS EXERCISE 104 Page 8 1. Find the positive root of the equation x + 3x 5 = 0, correct to 3 significant figures, using the method of bisection. Let f(x) =
Διαβάστε περισσότεραMatrices and Determinants
Matrices and Determinants SUBJECTIVE PROBLEMS: Q 1. For what value of k do the following system of equations possess a non-trivial (i.e., not all zero) solution over the set of rationals Q? x + ky + 3z
Διαβάστε περισσότεραAnswer sheet: Third Midterm for Math 2339
Answer sheet: Third Midterm for Math 339 November 3, Problem. Calculate the iterated integrals (Simplify as much as possible) (a) e sin(x) dydx y e sin(x) dydx y sin(x) ln y ( cos(x)) ye y dx sin(x)(lne
Διαβάστε περισσότεραMINIMAL CLOSED SETS AND MAXIMAL CLOSED SETS
MINIMAL CLOSED SETS AND MAXIMAL CLOSED SETS FUMIE NAKAOKA AND NOBUYUKI ODA Received 20 December 2005; Revised 28 May 2006; Accepted 6 August 2006 Some properties of minimal closed sets and maximal closed
Διαβάστε περισσότεραON A BIHARMONIC EQUATION INVOLVING NEARLY CRITICAL EXPONENT
Available at: http://www.ictp.trieste.it/~pub off IC/004/ United Nations Educational Scientific and Cultural Organization and International Atomic Energy Agency THE ADUS SALAM INTERNATIONAL CENTRE FOR
Διαβάστε περισσότερα