Results 91 to 100 of about 173,448 (222)

On bounded cohomology of amalgamated products of groups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We investigate the structure of the singular part of the second bounded cohomology group of amalgamated products of groups by constructing an analog of the initial segment of the Mayer-Vietoris exact cohomology sequence for the spaces of pseudocharacters.
Igor V. Erovenko
doaj   +1 more source

Regularity of 𝐅𝐈-modules and local cohomology [PDF]

open access: green, 2018
Rohit Nagpal   +5 more
openalex   +1 more source

Hochschild Cohomology Theories in White Noise Analysis

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
We show that the continuous Hochschild cohomology and the differential Hochschild cohomology of the Hida test algebra endowed with the normalized Wick product are the same.
Rémi Léandre
doaj   +1 more source

Substitutions with Vanishing Rotationally Invariant First Cohomology

open access: yesDiscrete Dynamics in Nature and Society, 2012
The cohomology groups of tiling spaces with three-fold and nine-fold symmetries are obtained. The substitution tilings are characterized by the fact that they have vanishing first cohomology group in the space of tilings modulo a rotation.
Juan GarcĂ­a Escudero
doaj   +1 more source

Triviality of differential Galois cohomology of linear differential algebraic groups [PDF]

open access: green, 2019
Andrei Minchenko   +3 more
openalex   +1 more source

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