Read e-book online Analysis and Geometry on Complex Homogeneous Domains PDF

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  • March 16, 2018
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By Jacques Faraut, Soji Kaneyuki, Adam Koranyi, Qi-keng Lu, Guy Roos

ISBN-10: 1461213665

ISBN-13: 9781461213666

ISBN-10: 1461271150

ISBN-13: 9781461271154

A variety of very important themes in complicated research and geometry are coated during this first-class introductory textual content. Written by way of specialists within the topic, every one bankruptcy unfolds from the fundamentals to the extra advanced. The exposition is rapid-paced and effective, with no compromising proofs and examples that let the reader to know the necessities. the main easy form of area tested is the bounded symmetric area, initially defined and categorized by way of Cartan and Harish- Chandra. of the 5 components of the textual content care for those domain names: one introduces the topic in the course of the idea of semisimple Lie algebras (Koranyi), and the opposite via Jordan algebras and triple platforms (Roos). greater sessions of domain names and areas are offered via the pseudo-Hermitian symmetric areas and similar R-spaces. those sessions are lined through a examine in their geometry and a presentation and category in their Lie algebraic concept (Kaneyuki). within the fourth a part of the ebook, the warmth kernels of the symmetric areas belonging to the classical Lie teams are decided (Lu). particular computations are made for every case, giving detailed effects and complementing the extra summary and normal equipment offered. additionally explored are contemporary advancements within the box, particularly, the learn of advanced semigroups which generalize complicated tube domain names and serve as areas on them (Faraut). This quantity may be worthy as a graduate textual content for college kids of Lie staff concept with connections to advanced research, or as a self-study source for rookies to the sphere. Readers will succeed in the frontiers of the topic in a significantly shorter time than with latest texts.

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Example text

Let (11", V) be a spherical representation of G. There exists a unique linear form A on a such that the subspace {V E V I VH E a, d1l"(H)v = A(H)v, "IX E n, d1l"(X)v = O} has dimension one. A non-zero vector belonging to that space is called a highest weight vector and A is the (restricted) highest weight of the spherical representation 11". Let Uo be a non-zero K-invariant vector, and Vo a highest weight vector. They can be chosen such that (uolvo) > O. 24 II. 2 (Vinberg) Let (7r, V) be a spherical irreducible representation of G.

Since (uolvo) > 0, it contains Uo and C:::> Co. Let us show that Vo E Co. There exists an orthonormal basis {e1' ... L1 = A. 2 Invariant cones in a representation space and 25 N 7r(expH)uo = L(uolej)eJLj(H)ej. (H) (j = 2, ... ,N). Therefore lim e- t )'(H)7r(exp tH)uo = (uolvo)vo, t-+oo and this shows that Vo E Co, therefore C = Co. (c) If C1 and C2 are two convex cones such that C1 c C2, then Ci :::> C2, therefore CO' is a maximal invariant regular cone. • Example. Let G = SL(n,IR), and V = Sym(n,IR) be the space of n x n symmetric matrices, with the Euclidean inner product (ulv) = tr(uv).

2) Determine the reproducing kernel of 'H.. Let us consider a basic example. Lmr2m < 00. mEZ Let 'H. Lm < 00. mEZ By the Schwarz inequality, therefore the Laurent series of f converges in D, and If(z)1 ~ v'c(r)lIfll (Izl = r). 2 Invariant Hilbert spaces of holomorphic functions 17 It follows that 11 is a Hilbert space of holomorphic functions. Define E = {m E Z I JLm > O}. The functions 1/lm (m E E), form a Hilbert basis of 11, and its reproducing kernel is given by K{z,w) =L 1/lm{z)1/lm{w) =L mEE JLmzmii;m.

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Analysis and Geometry on Complex Homogeneous Domains by Jacques Faraut, Soji Kaneyuki, Adam Koranyi, Qi-keng Lu, Guy Roos

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