Results 1 to 10 of about 200 (50)
Brauer groups of Quot schemes [PDF]
Michigan Mathematical Journal, 2015 Let $X$ be an irreducible smooth complex projective curve. Let ${\mathcal Q}(r,d)$ be the Quot scheme parametrizing all coherent subsheaves of ${\mathcal O}^{\oplus r}_X$ of rank $r$ and degree $-d$.
Indranil Biswas +2 more
exaly +3 more sources
A note on divisorial correspondences of extensions of abelian schemes by tori [PDF]
Communications in Algebra, 2020 Let S be a locally noetherian scheme and consider two extensions G_1 and G_2 of abelian S-schemes by S-tori. In this note we prove that the fppf-sheaf Corr _S(G_1,G_2) of divisorial correspondences between G_1 and G_2 is representable.
Cristiana Bertolin
exaly +5 more sources
Brauer groups of moduli of hyperelliptic curves via cohomological invariants
Forum of Mathematics, Sigma, 2021 Using the theory of cohomological invariants for algebraic stacks, we compute the Brauer group of the moduli stack of hyperelliptic curves ${\mathcal {H}}_g$ over any field of characteristic $0$.
Andrea Di Lorenzo, Roberto Pirisi
doaj +1 more source
Fibre Bundles and Generalised Dimensional Reduction [PDF]
, 1997 We study some geometrical and topological aspects of the generalised dimensional reduction of supergravities in D=11 and D=10 dimensions, which give rise to massive theories in lower dimensions.
C N Pope +15 more
core +3 more sources
Failure of strong approximation on an affine cone [PDF]
, 2018 We use the Brauer-Manin obstruction to strong approximation on a punctured affine cone to explain a curious property of coprime integer solutions to a homogeneous Diophantine equation.Comment: Changes following referee's ...
Bright, Martin, Kok, Ivo
core +3 more sources
Brauer group of moduli spaces of pairs [PDF]
, 2011 We show that the Brauer group of any moduli space of stable pairs with fixed determinant over a curve is zero.Comment: 12 pages.
Artin M. +15 more
core +3 more sources
Poisson Algebras and 3D Superintegrable Hamiltonian Systems [PDF]
, 2018 Using a Poisson bracket representation, in 3D, of the Lie algebra sl (2), we first use highest weight representations to embed this into larger Lie algebras.
Fordy, AP, Haung, Q
core +2 more sources
The Period-Index Problem of the Canonical Gerbe of Symplectic and Orthogonal Bundles [PDF]
, 2015 We consider regularly stable parabolic symplectic and orthogonal bundles over an irreducible smooth projective curve over an algebraically closed field of characteristic zero.
Biswas, Indranil +2 more
core +1 more source
Obstructions to the Hasse principle in families [PDF]
, 2018 For a family of varieties over a number field, we give conditions under which 100% of members have no Brauer-Manin obstruction to the Hasse principle.Comment: Improvements following referees ...
Bright, Martin
core +3 more sources
Instability for a Certain Functional Differential Equation of Sixth Order [PDF]
, 2011 Sucient conditions are obtained for the instability of the zero solutionof a certain sixth order nonlinear functional dierential equation by the Lyapunov-Krasovskii functional approach.
Tunc, C. (Cemil)
core +2 more sources