Results 21 to 30 of about 1,062,577 (312)

On the motive of O'Grady's six dimensional hyper-K\"{a}hler varieties [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2023
We prove that the rational Chow motive of a six dimensional hyper-K\"{a}hler variety obtained as symplectic resolution of O'Grady type of a singular moduli space of semistable sheaves on an abelian surface $A$ belongs to the tensor category of motives ...
Salvatore Floccari
doaj   +1 more source

Abundance for slc surfaces over arbitrary fields [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2023
We prove the abundance conjecture for projective slc surfaces over arbitrary fields of positive characteristic. The proof relies on abundance for lc surfaces over abritrary fields, proved by Tanaka, and on the technique of Hacon and Xu to descend semi ...
Quentin Posva
doaj   +1 more source

Classical Algebraic Geometry [PDF]

open access: yesOberwolfach Reports, 2005
The worshop on Classical Algebraic Geometry, organized by David Eisenbud (Berkeley), Joe Harris (Harvard) and Frank-Olaf Schreyer (Saarbrücken) was well attended by important senior researchers and many gifted young mathematicians. Classical Algebraic Geometry is characterized by having very basic and concrete problems.
David Eisenbud   +2 more
openaire   +2 more sources

Formalization and Implementation of Algebraic Methods in Geometry [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
We describe our ongoing project of formalization of algebraic methods for geometry theorem proving (Wu's method and the Groebner bases method), their implementation and integration in educational tools.
Filip Marić   +3 more
doaj   +1 more source

Stably semiorthogonally indecomposable varieties [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2023
A triangulated category is said to be indecomposable if it admits no nontrivial semiorthogonal decompositions. We introduce a definition of a noncommutatively stably semiorthogonally indecomposable (NSSI) variety. This propery implies, among other things,
Dmitrii Pirozhkov
doaj   +1 more source

Introduction to Algebraic Geometry

open access: yesFormalized Mathematics, 2023
Summary A classical algebraic geometry is study of zero points of system of multivariate polynomials [3], [7] and those zero points would be corresponding to points, lines, curves, surfaces in an affine space. In this article we give some basic definition of the area of affine algebraic geometry such as algebraic set, ideal of set of ...
openaire   +1 more source

Enumerative Real Algebraic Geometry [PDF]

open access: yes, 2002
This is a pre-published version harvested from ArXiv.org. The published version can be found at http://dimacs.rutgers.edu/Volumes/Vol60.htmlEnumerative Geometry is concerned with the number of solutions to a structured system of polynomial equations ...
Sottile, Frank
core   +3 more sources

Factorization of the Abel-Jacobi maps [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2021
As an application of the theory of Lawson homology and morphic cohomology, Walker proved that the Abel-Jacobi map factors through another regular homomorphism. In this note, we give a direct proof of the theorem.
Fumiaki Suzuki
doaj   +1 more source

How to glue derived categories

open access: yesBulletin of Mathematical Sciences, 2018
We give an overview of existing enhancement techniques for derived and trianguated categories based on the notion of a stable model category, and show how it can be applied to the problem of gluing triangulated categories.
D. Kaledin
doaj   +1 more source

Hyperelliptic classes are rigid and extremal in genus two [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2020
We show that the class of the locus of hyperelliptic curves with $\ell$ marked Weierstrass points, $m$ marked conjugate pairs of points, and $n$ free marked points is rigid and extremal in the cone of effective codimension-($\ell + m$) classes on ...
Vance Blankers
doaj   +1 more source

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