Results 31 to 40 of about 233,188 (306)

Note on absolute sets of rigid local systems

open access: yesComptes Rendus. Mathématique, 2022
In this note we give a description up to a quasi-finite morphism of the absolute sets of simple cohomologically rigid local systems on a smooth complex quasi-projective algebraic variety.
Budur, Nero   +2 more
doaj   +1 more source

Algebraic varieties are homeomorphic to varieties defined over number fields

open access: yes, 2019
We show that every affine or projective algebraic variety defined over the field of real or complex numbers is homeomorphic to a variety defined over the field of algebraic numbers. We construct such a homeomorphism by choosing a small deformation of the
Parusinski, Adam, Rond, Guillaume
core   +2 more sources

Interior Algebras and Varieties

open access: yesJournal of Algebra, 1999
1. INTRODUCTIONWe define interior algebras, which are natural generalizations of Booleanrings equipped with an interior operator and of equality algebras. We char-acterize interior algebras in terms of a distinguished subsemilattice. Fullyinterior algebras, in which the subsemilattice consists of all idempotents,are generalizations of Boolean rings and ...
Kelarev, A.V., Stokes, T.
openaire   +2 more sources

Knowledgebra: An Algebraic Learning Framework for Knowledge Graph

open access: yesMachine Learning and Knowledge Extraction, 2022
Knowledge graph (KG) representation learning aims to encode entities and relations into dense continuous vector spaces such that knowledge contained in a dataset could be consistently represented.
Tong Yang   +4 more
doaj   +1 more source

Algebraic Stein Varieties [PDF]

open access: yesMathematical Research Letters, 2008
16 pages, revised version, accepted by Mathematical Research ...
openaire   +2 more sources

On projections of real algebraic varieties [PDF]

open access: yesPacific Journal of Mathematics, 1986
In this paper we generalize an earlier result of the authors, showing that any closed semialgebraic set whose Zariski-closure is irreducible, is the projection under a finite map of an irreducible real algebraic set (see Theorem 3.2 below).
Andradas, C., Gamboa, J. M.
openaire   +4 more sources

Phenomenological rate-independent uniaxial hysteretic models: A mini-review

open access: yesFrontiers in Built Environment, 2022
A great variety of phenomenological models has been proposed over the years to model rate-independent hysteretic forces in structural mechanics. The classification of such models is usually based on the type of equation that needs to be solved to ...
Raffaele Capuano   +2 more
doaj   +1 more source

The space of arcs of an algebraic variety

open access: yes, 2017
The paper surveys several results on the topology of the space of arcs of an algebraic variety and the Nash problem on the arc structure of singularities.Comment: 29 pages; v3 corrects some typos.
de Fernex, Tommaso
core   +1 more source

Parametric Expansions of an Algebraic Variety Near Its Singularities II

open access: yesAxioms
The paper is a continuation and completion of the paper Bruno, A.D.; Azimov, A.A. Parametric Expansions of an Algebraic Variety Near Its Singularities.
Alexander D. Bruno, Alijon A. Azimov
doaj   +1 more source

Approximation by piecewise-regular maps

open access: yes, 2019
A real algebraic variety W of dimension m is said to be uniformly rational if each of its points has a Zariski open neighborhood which is biregularly isomorphic to a Zariski open subset of R^m. Let l be any nonnegative integer. We prove that every map of
Bilski, Marcin, Kucharz, Wojciech
core   +1 more source

Home - About - Disclaimer - Privacy