Jacques Faraut, Soji Kaneyuki, Adam Koranyi, Qi-keng Lu, Guy's Analysis and Geometry on Complex Homogeneous Domains PDF

By Jacques Faraut, Soji Kaneyuki, Adam Koranyi, Qi-keng Lu, Guy Roos

A variety of vital issues in advanced research and geometry are lined during this first-class introductory textual content. Written by way of specialists within the topic, each one bankruptcy unfolds from the fundamentals to the extra advanced. The exposition is rapid-paced and effective, with out compromising proofs and examples that permit the reader to know the necessities. the main simple kind of area tested is the bounded symmetric area, initially defined and categorised via Cartan and Harish- Chandra. of the 5 elements of the textual content care for those domain names: one introduces the topic in the course of the conception of semisimple Lie algebras (Koranyi), and the opposite via Jordan algebras and triple platforms (Roos). better periods of domain names and areas are supplied by way of the pseudo-Hermitian symmetric areas and similar R-spaces. those periods are lined through a learn in their geometry and a presentation and type 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). specific computations are made for every case, giving distinctive effects and complementing the extra summary and normal tools offered. additionally explored are fresh advancements within the box, specifically, the learn of advanced semigroups which generalize advanced tube domain names and serve as areas on them (Faraut). This quantity may be helpful as a graduate textual content for college kids of Lie team concept with connections to advanced research, or as a self-study source for rookies to the sphere. Readers will achieve the frontiers of the topic in a significantly shorter time than with current texts.

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P(i) = J(gexpiX) = o. 1. For -y = 9 exp iX we put 1i"(r) = 7r(g)Exp(id7r(X)). Then 111i"(r)II ~ 1, and 1i"(-y)* = 1i"(r#). In fact -y# = expiX. g-1 = g-1 exp(iAd(g)X), 42 III. Positive Unitary Representations and 1i'(-y). = Exp(id1l"(X))1I"(g-1), 1i'(-y*) = 1I"(g-1)ExP(id1l"(Ad(g)X)) = 1I"(g-1 )11" (g )Exp( id1l"(X) )1I"(g-1) = Exp( id1l"(X))1I"(g-1). We will prove first that 1i' is weakly holomorphic, then that 1i' is a representation. 1): there exists an open neighborhood U of e in GC, and a dense subspace 'Ho C 'H such that, for u E 'Ho, the map CPu : g ~ 11" (g)u has a holomorphic extension to U, CPu: U -t 'H.

For u E 'H, the linear form v ~ (vlu) is continuous on 'Ho. Therefore there exists a unique u* E 'Ho such that (vlu) = b(v,u*). One puts Au = u*. The operator A is continuous, injective, maps 'H into 'Ho, and (Aulv) = b(Au, Av) (u, v E 'H). • It follows that A is selfadjoint. 3. We put B(u, v) = b(u, v) Then B(u, u) ~ + (ulv) lIull 2 (u, v E Y). (u E Y). jB(u,u). Then Y c 'Ho c 'H, and the Hermitian form b extends continuously to 'Ho. One defines the selfadjoint operator A as in the Lemma, and shows that A commutes with the representation 7r, 7r(g)A = A7r(g) (g E G).

The operator A is continuous, injective, maps 'H into 'Ho, and (Aulv) = b(Au, Av) (u, v E 'H). • It follows that A is selfadjoint. 3. We put B(u, v) = b(u, v) Then B(u, u) ~ + (ulv) lIull 2 (u, v E Y). (u E Y). jB(u,u). Then Y c 'Ho c 'H, and the Hermitian form b extends continuously to 'Ho. One defines the selfadjoint operator A as in the Lemma, and shows that A commutes with the representation 7r, 7r(g)A = A7r(g) (g E G). 2 that A = p,l, therefore (u, v) = p,B(u, v). References [Cartier,1974]' [Nelson,1959j.

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