Displaying similar documents to “Cohomology operations in the K-theory of the classical groups”

Canonical subgroups of H 1 S L 2 , R

Filippo De Mari, Krzysztof Nowak (2002)

Bollettino dell'Unione Matematica Italiana

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We classify, up to conjugation, all subgroups of the semidirect products H 1 S L 2 , R and R 2 S L 2 , R . Our methods can also be applied to all Lie groups that are locally isomorphic to them.

G-structures of second order defined by linear operators satisfying algebraic relations.

Demetra Demetropoulou-Psomopoulou (1997)

Publicacions Matemàtiques

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The present work is based on a type of structures on a differential manifold V, called G-structures of the second kind, defined by endomorphism J on the second order tangent bundle T(V ). Our objective is to give conditions for a differential manifold to admit a real almost product and a generalised almost tangent structure of second order. The concepts of the second order frame bundle H(V ), its structural group L and its associated tangent bundle of second order T(V ) of a differentiable...

A note on Howe's oscillator semigroup

Joachim Hilgert (1989)

Annales de l'institut Fourier

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Analytic extensions of the metaplectic representation by integral operators of Gaussian type have been calculated in the L 2 ( n ) and the Bargmann-Fock realisations by Howe [How2] and Brunet-Kramer [Brunet-Kramer, Reports on Math. Phys., 17 (1980), 205-215]], respectively. In this paper we show that the resulting semigroups of operators are isomorphic and calculate the intertwining operator.