Results 11 to 20 of about 296 (61)
On complete reducibility in characteristic $p$ [PDF]
Épijournal de Géométrie Algébrique, 2017 Let $G$ be a reductive group over a field $k$ which is algebraically closed of characteristic $p \neq 0$. We prove a structure theorem for a class of subgroup schemes of $G$, for $p$ bounded below by the Coxeter number of $G$.
V. Balaji +2 more
doaj +1 more source
Serum concentrations of IL‐31 in dogs with nonpruritic mast cell tumours or lymphoma
Veterinary Dermatology, Volume 31, Issue 6, Page 466-e124, December 2020., 2020 Background The aim of this study was to compare serum interleukin (IL)‐31 concentrations in dogs with lymphoma and mast cell tumours (MCT) without pruritus to those of healthy dogs. Hypothesis/Objectives To determine if IL‐31 plays a role in tumour pathogenesis and if IL‐31 could be a biological marker for disease progression.
Nataliia Ignatenko +8 more
wiley +1 more source
Good reduction of algebraic groups and flag varieties [PDF]
, 2015 In 1983, Faltings proved that there are only finitely many abelian varieties over a number field of fixed dimension and with good reduction outside a given set of places.
Javanpeykar, Ariyan, Loughran, Daniel
core +2 more sources
Vector bundles trivialized by proper morphisms and the fundamental group scheme [PDF]
, 2009 Let X be a smooth projective variety defined over an algebraically closed field k. Nori constructed a category of vector bundles on X, called essentially finite vector bundles, which is reminiscent of the category of representations of the fundamental ...
Indranil Biswas +2 more
core +5 more sources
THE GEOMETRY OF BLUEPRINTS PART II: TITS–WEYL MODELS OF ALGEBRAIC GROUPS
Forum of Mathematics, Sigma, 2018 This paper is dedicated to a problem raised by Jacquet Tits in 1956: the Weyl group of a Chevalley group should find an interpretation as a group over what is nowadays called $\mathbb{F}_{1}$, the field with one element.
OLIVER LORSCHEID
doaj +1 more source
Generalizations of quasielliptic curves [PDF]
Épijournal de Géométrie AlgébriqueWe generalize the notion of quasielliptic curves, which have infinitesimal symmetries and exist only in characteristic two and three, to a remarkable hierarchy of regular curves having infinitesimal symmetries, defined in all characteristics and having ...
Cesar Hilario, Stefan Schröer
doaj +1 more source
Maximality of hyperspecial compact subgroups avoiding Bruhat-Tits theory [PDF]
, 2016 Let $k$ be a complete non-archimedean field (non trivially valued). Given a reductive $k$-group $G$, we prove that hyperspecial subgroups of $G(k)$ (i.e. those arising from reductive models of $G$) are maximal among bounded subgroups.
Maculan, Marco
core +3 more sources
Superspecial rank of supersingular abelian varieties and Jacobians [PDF]
, 2015 An abelian variety defined over an algebraically closed field k of positive characteristic is supersingular if it is isogenous to a product of supersingular elliptic curves and is superspecial if it is isomorphic to a product of supersingular elliptic ...
Achter, Jeff, Pries, Rachel
core +2 more sources
Integrating Hasse-Schmidt derivations [PDF]
, 2014 We study integrating (that is expanding to a Hasse-Schmidt derivation) derivations, and more generally truncated Hasse-Schmidt derivations, satisfying iterativity conditions given by formal group laws.
Hoffmann, Daniel, Kowalski, Piotr
core +1 more source
Formal GAGA for good moduli spaces [PDF]
, 2015 We prove formal GAGA for good moduli space morphisms under an assumption of "enough vector bundles" (which holds for instance for quotient stacks). This supports the philosophy that though they are non-separated, good moduli space morphisms largely ...
Geraschenko, Anton, Zureick-Brown, David
core +1 more source