Results 1 to 10 of about 116,933 (156)
The Picard group of Brauer-Severi varieties [PDF]
Open Mathematics, 2018 In this paper, we provide explicit generators for the Picard groups of cyclic Brauer-Severi varieties defined over the base field. In particular,we provide such generators for all Brauer-Severi surfaces.
Badr Eslam +2 more
doaj +9 more sources
Picard Groups of Algebraic Groups and an Affineness Criterion
Comptes Rendus. Mathématique, 2023 We prove that an algebraic group over a field $k$ is affine precisely when its Picard group is torsion, and show that in this case the Picard group is finite when $k$ is perfect, and the product of a finite group of order prime to $p$ and a $p$-primary ...
Rosengarten, Zev
doaj +4 more sources
Morita equivalence of certain crossed products [PDF]
Categories and General Algebraic Structures with Applications, 2023 We introduce an alternative criterion for Morita equivalence over graded tensor categories using equivariant centers and equivariantizations. While Morita equivalence has been extensively studied in the context of fusion categories, primarily through the
Adriana Mejia Castaño
doaj +1 more source
Finite torsors over strongly $F$-regular singularities [PDF]
Épijournal de Géométrie Algébrique, 2022 We investigate finite torsors over big opens of spectra of strongly $F$-regular germs that do not extend to torsors over the whole spectrum. Let $(R,\mathfrak{m},k)$ be a strongly $F$-regular $k$-germ where $k$ is an algebraically closed field of ...
Javier Carvajal-Rojas
doaj +1 more source
Polymorphic Automorphisms and the Picard Group
CoRR, 2021 16 pages.
Hofstra, Pieter +2 more
openaire +4 more sources
D-instanton superpotential in string theory
Journal of High Energy Physics, 2022 We study the non-perturbative superpotential generated by D(-1)-branes in type IIB compactifications on orientifolds of Calabi-Yau threefold hypersurfaces.
Manki Kim
doaj +1 more source
Revision in nomenclature and classification of the Neogene marl deposits: A case study from south and southeast of Tehran [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2022 Marl is a type of mixed carbonate–silicate sediment and contains clay and carbonate minerals deposited in different environments. The terms marl and marlstone are still imprecisely used in geology.
Hamid Reza Peyrowan, Kourosh Shirani
doaj +1 more source
Troisi\`eme groupe de cohomologie non ramifi\'ee des torseurs universels sur les surfaces rationnelles [PDF]
Épijournal de Géométrie Algébrique, 2018 Let $k$ a field of characteristic zero. Let $X$ be a smooth, projective, geometrically rational $k$-surface. Let $\mathcal{T}$ be a universal torsor over $X$ with a $k$-point et $\mathcal{T}^c$ a smooth compactification of $\mathcal{T}$. There is an open
Yang Cao
doaj +1 more source
Using Law to Limit Religious Freedom: The Case of New Religious Movements in France
Religions, 2023 France, with its approach to managing religion known as laïcité, has been almost unique among Western nations in its approach to religious freedom for minority religious groups and movements.
Sajjad Adeliyan Tous +2 more
doaj +1 more source
Results in Physics, 2023 The SARSCoV-2 virus, also known as the coronavirus-2, is the consequence of COVID-19, a severe acute respiratory syndrome. Droplets from an infectious individual are how the pathogen is transmitted from one individual to another and occasionally, these ...
Yu-Ming Chu +6 more
doaj +1 more source