Results 51 to 60 of about 14,418,431 (251)

On the Tate Conjectures for Divisors on a Fibred Variety and on its Generic Scheme Fibre in the Case of Finite Characteristic

open access: yesМоделирование и анализ информационных систем, 2017
We investigate interrelations between the Tate conjecture for divisors on a fibred variety over a finite field and the Tate conjecture for divisors on the generic scheme fibre under the condition that the generic scheme fibre has zero irregularity. Let \(
Tatyana V. Prokhorova
doaj   +1 more source

Taking a Stand Against Air Pollution – The Impact on Cardiovascular Disease: A Joint Opinion from the World Heart Federation, American College of Cardiology, American Heart Association, and the European Society of Cardiology

open access: yesGlobal Heart, 2021
Although the attention of the world and the global health community specifically is deservedly focused on the COVID-19 pandemic, other determinants of health continue to have large impacts and may also interact with COVID-19. Air pollution is one crucial
Michael Brauer   +5 more
doaj   +1 more source

A Dixmier-Douady Theory for strongly self-absorbing C*-algebras II: the Brauer group [PDF]

open access: yes, 2014
We have previously shown that the isomorphism classes of orientable locally trivial fields of C*-algebras over a compact metrizable space X with fiber D⊗
M. Dadarlat, U. Pennig
semanticscholar   +1 more source

Braided autoequivalences and the equivariant Brauer group of a quasitriangular Hopf algebra [PDF]

open access: yes, 2014
Let $(H, R)$ be a finite dimensional quasitriangular Hopf algebra over a field $k$, and $_H\mathcal{M}$ the representation category of $H$. In this paper, we study the braided autoequivalences of the Drinfeld center $^H_H\mathcal{YD}$ trivializable on ...
J. Dello, Yinhuo Zhang
semanticscholar   +1 more source

Azumaya Objects in Triangulated Bicategories

open access: yes, 2013
We introduce the notion of Azumaya object in general homotopy-theoretic settings. We give a self-contained account of Azumaya objects and Brauer groups in bicategorical contexts, generalizing the Brauer group of a commutative ring.
A Baker   +19 more
core   +1 more source

Graded Brauer Groups.

open access: yescrll, 1964
Author's introduction: This paper arose out of the observation that the definition of a Clifford algebra as an invariant of a quadratic form is made awkward by the fact that the algebra corresponding to the orthogonal direct sum of two quadratic forms is not simply the tensor product of their separate Clifford algebras.
openaire   +2 more sources

More on the Schur group of a commutative ring

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
The Schur group of a commutative ring, R, with identity consists of all classes in the Brauer group of R which contain a homomorphic image of a group ring RG for some finite group G.
R. A. Mollin
doaj   +2 more sources

A finiteness theorem for the Brauer group of K3 surfaces in odd characteristic [PDF]

open access: yes, 2014
Let $k$ be a field finitely generated over the finite field $\mathbb F_p$ of odd characteristic $p$. For any K3 surface $X$ over $k$ we prove that the prime to $p$ component of the cokernel of the natural map $Br(k)\to Br(X)$ is finite.
A. Skorobogatov, Y. Zarhin
semanticscholar   +1 more source

The Schur subgroup of the Brauer group. [PDF]

open access: yesPacific Journal of Mathematics, 1977
Made available in DSpace on 2014-12-14T13:09:26Z (GMT). No. of bitstreams: 1 7524379.pdf: 3475220 bytes, checksum: febfd64411d586ca56308400360efba9 (MD5) Previous issue date: 1975 ; Embargo set by: Seth Robbins for item 68280 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs ; Restricted to ...
J. W. Pendergrass
semanticscholar   +4 more sources

On the Brauer group of affine diagonal quadrics [PDF]

open access: yes, 2014
In a previous work, we introduced the notion of uniform generators of the Brauer group and proved that general diagonal cubic surfaces do not have such generators.
Tetsuya Uematsu
semanticscholar   +1 more source

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