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Displaying 241 – 260 of 668

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Cohomology of Drinfeld symmetric spaces and Harmonic cochains

Yacine Aït Amrane (2006)

Annales de l’institut Fourier

Let K be a non-archimedean local field. This paper gives an explicit isomorphism between the dual of the special representation of G L n + 1 ( K ) and the space of harmonic cochains defined on the Bruhat-Tits building of G L n + 1 ( K ) , in the sense of E. de Shalit [11]. We deduce, applying the results of a paper of P. Schneider and U. Stuhler [9], that there exists a G L n + 1 ( K ) -equivariant isomorphism between the cohomology group of the Drinfeld symmetric space and the space of harmonic cochains.

Cohomology of integer matrices and local-global divisibility on the torus

Marco Illengo (2008)

Journal de Théorie des Nombres de Bordeaux

Let p 2 be a prime and let  G be a p -group of matrices in SL n ( ) , for some integer  n . In this paper we show that, when n < 3 ( p - 1 ) , a certain subgroup of the cohomology group H 1 ( G , 𝔽 p n ) is trivial. We also show that this statement can be false when n 3 ( p - 1 ) . Together with a result of Dvornicich and Zannier (see [2]), we obtain that any algebraic torus of dimension n < 3 ( p - 1 ) enjoys a local-global principle on divisibility by  p .

Cohomology of Lie groups made discrete.

Pere Pascual Gainza (1990)

Publicacions Matemàtiques

We give a survey of the work of Milnor, Friedlander, Mislin, Suslin and other authors on the Friedlander-Milnor conjecture on the homology of Lie groups made discrete and its relation to the algebraic K-theory of fields.

Currently displaying 241 – 260 of 668