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Sub-Laplacian Operators of Some Model Domains [Kõva köide]

  • Formaat: Hardback, 266 pages, kõrgus x laius: 240x170 mm, kaal: 587 g, 7 Illustrations
  • Sari: Advances in Analysis and Geometry
  • Ilmumisaeg: 01-Aug-2022
  • Kirjastus: De Gruyter
  • ISBN-10: 3110642107
  • ISBN-13: 9783110642100
  • Formaat: Hardback, 266 pages, kõrgus x laius: 240x170 mm, kaal: 587 g, 7 Illustrations
  • Sari: Advances in Analysis and Geometry
  • Ilmumisaeg: 01-Aug-2022
  • Kirjastus: De Gruyter
  • ISBN-10: 3110642107
  • ISBN-13: 9783110642100

The book constructs explicitly the fundamental solution of the sub-Laplacian operator for a family of model domains in Cn+1. This type of domain is a good point-wise model for a Cauchy-Rieman (CR) manifold with diagonalizable Levi form. Qualitative results for such operators have been studied extensively, but exact formulas are difficult to derive. Exact formulas are closely related to the underlying geometry and lead to equations of classical types such as hypergeometric equations and Whittaker’s equations.

Preface vii
1 Fourier analysis and Laplace operators on IR"
1(44)
1.1 Background
1(14)
1.1.1 Some definitions from measure theory
1(1)
1.1.2 Polar coordinates in Rn
2(2)
1.1.3 The spaces of C∞c(Rn) and S(Rn)
4(8)
1.1.4 The space of tempered distribution S(Rn)*
12(3)
1.2 Convolution units and the group algebra
15(5)
1.2.1 Convolution of functions
15(5)
1.3 Fourier transform oftempered distributions
20(1)
1.4 Lp spaces and its duals
21(17)
1.4.1 Pointwise convergence
28(3)
1.4.2 Convolution of finite measures
31(5)
1.4.3 Convolution with tempered distributions
36(2)
1.5 Solving partial differential equations
38(2)
1.6 The convolution kernels of the functions of Laplacian
40(5)
2 The model domain, the sub-Laplacian operator and Cauchy-Szego kernels
45(22)
2.1 Background of the problem
45(13)
2.1.1 Cauchy-Riemann geometry
45(2)
2.1.2 Tangential Cauchy-Riemann operator
47(6)
2.1.3 Heisenberg group
53(3)
2.1.4 The nonisotropic Heisenberg group
56(2)
2.2 The model domain in Cn+1
58(3)
2.3 The Cauchy-Szego kernel on
61(6)
3 The fundamental solution for the operator Δλ: k = 1
67(36)
3.1 The fundamental solution for Δλ: k = 1 and n = 1
67(7)
3.2 Relative fundamental solution and the Cauchy-Szego kernel
74(9)
3.3 Hermite operator
83(13)
3.3.1 Fundamental solution with singularity at the origin
84(9)
3.3.2 Fundamental solution with singularity at an arbitrary point y
93(3)
3.4 Connection with the operator Δλ
96(7)
4 Fundamental solution for the operator Δλ:k = 2 and n = 1
103(38)
4.1 Introduction
103(4)
4.2 Calculation of the fundamental solution
107(11)
4.3 The special case λ = 0
118(23)
A.1 Kummer's equation
133(2)
A.2 Laguerre's equation
135(3)
A.3 Whittaker's equation
138(3)
5 Fundamental solution for the operator Δ0: k = 2
141(34)
5.1 Adapted polar coordinates
143(1)
5.2 Adapted spherical harmonics
144(2)
5.3 Partial fundamental solution
146(5)
5.4 Complete fundamental solution
151(4)
5.5 The case k = 2 and n = 2
155(1)
5.6 Computation of the sum over odd integers
156(3)
5.7 Computation of the sum over even integers
159(9)
5.8 Computation of the Fourier integral (in τ) of K(+) and k(-)
168(7)
6 Green's function of the operator AA for general n and k
175(22)
6.1 FA when n = 1
177(3)
6.2 Derivation of the Green's function Kλ: singular part
180(1)
6.3 Derivation of the Green's function Kλ: regular part
181(6)
6.4 Analytic properties of Gn,k and Fλ
187(4)
6.5 Derivation of the Green's function: computation of cn,k
191(6)
7 A geometric formula for the fundamental solution
197(48)
7.1 Introduction
197(1)
7.2 Hamiltonian formalism
197(3)
7.2.1 Newtonian mechanics
197(1)
7.2.2 Lagrangian formalism
198(2)
7.2.3 Hamiltonian formalism
200(1)
7.3 Kohn Laplacian
200(3)
7.4 Geometry on Hk
203(3)
7.5 Hamiltonian formalism on H1
206(5)
7.6 Lagrangian formalism on H1
211(15)
7.6.1 Connectivity by geodesies
213(13)
7.7 Fundamental solution in terms of geometric invariants
226(11)
7.8 Fundamental solution Kλ for Δλ when |Re(λ)| > 1
237(5)
7.9 The case |Re(λ)|≤1 with λ ε Σ
242(3)
Bibliography 245(4)
Index 249
Der-Chen Chang, Georgetown University, Washington, D.C., USA; Jingzhi Tie, University of Georgia, Georgia, USA.