Valery V. Volchkov & Vitaly V. Volchkov 
Offbeat Integral Geometry on Symmetric Spaces 

The book demonstrates the development of integral geometry on domains of homogeneous spaces since 1990. It covers a wide range of topics, including analysis on multidimensional Euclidean domains and Riemannian symmetric spaces of arbitrary ranks as well as recent work on phase space and the Heisenberg group. The book includes many significant recent results, some of them hitherto unpublished, among which can be pointed out uniqueness theorems for various classes of functions, far-reaching generalizations of the two-radii problem, the modern versions of the Pompeiu problem, and explicit reconstruction formulae in problems of integral geometry. These results are intriguing and useful in various fields of contemporary mathematics. The proofs given are “minimal” in the sense that they involve only those concepts and facts which are indispensable for the essence of the subject. Each chapter provides a historical perspective on the results presented and includes many interesting open problems. Readers will find this book relevant to harmonic analysis on homogeneous spaces, invariant spaces theory, integral transforms on symmetric spaces and the Heisenberg group, integral equations, special functions, and transmutation operators theory.

สารบัญ

Preface.- Part 1. Analysis on Symmetric Spaces. 1 Preliminaries.- 2 The Euclidean case.- 3 Symmetric spaces of the non-compact type.-4 Analogies for compact two-point homogeneous Spaces.- 5 The phase space associated to the Heisenberg group.-Part 2. Offbeat Integral Geometry.- 1 Functions with zero ball means on Euclidean space.- 2 Two-radii theorems in symmetric spaces.- 3 The problem of finding a function from its ball means.- 4 Sets with the Pompeiu property.- 5 Functions with zero integrals over polytopes.-6 Ellipsoidal means.- 7 The Pompeiu property on a sphere.- 8 The Pompeiu transform on symmetric spaces and groups.-9 Pompeiu transforms on manifolds.- Bibliography.- Index.- Basic notation.