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In this article, we define the notion of Brauer-Clifford group for H-locally finite (S, H)-Azumaya algebras, when H is a cocommutative Hopf algebra and S is an H-locally finite commutative H-module algebra over a commutative noetherian ring k. This is the situation that arises in applications with connections to algebraic geometry. This Brauer-Clifford group turns out to be an example of a Brauer group of a symmetric monoidal category. [ABSTRACT FROM AUTHOR]

For a formal scheme over a complete discrete valuation ring with a good action of a finite group, we define equivariant motivic integration, and we prove a change of variable formula for that. To do so, we construct and examine an induced group action on the Greenberg scheme of such a formal scheme. Using this equivariant motivic integration, we define an equivariant volume Poincaré series, from which we deduce Denef and Loeser's motivic zeta function including the action of the profinite group of roots of unity. [ABSTRACT FROM AUTHOR]

Letbe a connected reductive algebraic group defined over an algebraically closed field. Letbe a maximal torus ofand letbe a Borel subgroup ofcontaining. LetWdenote the Weyl group ofand letẇdenote an element in the preimage of the natural map fromtoW. We investigate what conditions are necessary and sufficient for the double cosets(called Bruhat cells) to contain only regular elements. An application is provided on how this information about Bruhat cells can be used to determine character values for certain Hecke algebras. [ABSTRACT FROM PUBLISHER]

LetGbe a finite group,Ea normal subgroup ofGandpa fixed prime. We say thatEisp-hypercyclically embeddedinGif everyp-G-chief factor ofEis cyclic. A subgroupHofGis said to satisfy Π-propertyinGif |G∕K:NG∕K((H∩L)K∕K)| is aπ((H∩L)K∕K)-number for any chief factorL∕KinG; we say thatHhas Π -property inGifH∩Oπ(H)(G) has Π-property inG. In this paper, we prove thatEisp-hypercyclically embedded inGif and only if some classes ofp-subgroups ofEhave Π -property inG. Some recent results are extended. [ABSTRACT FROM AUTHOR]