Results 11 to 20 of about 8,270,142 (310)

Gromov-Witten classes, quantum cohomology, and enumerative geometry [PDF]

open access: yesCommunications in Mathematical Physics, 1994
The paper is devoted to the mathematical aspects of topological quantum field theory and its applications to enumerative problems of algebraic geometry. In particular, it contains an axiomatic treatment of Gromov-Witten classes, and a discussion of their
M. Kontsevich, Y. Manin
semanticscholar   +3 more sources

On Perfectly Generating Projective Classes in Triangulated Categories [PDF]

open access: yes, 2008
We say that a projective class in a triangulated category with coproducts is perfect if the corresponding ideal is closed under coproducts of maps. We study perfect projective classes and the associated phantom and cellular towers.
G. Modoi
semanticscholar   +1 more source

Regular subgroups, nilpotent algebras and projectively congruent matrices [PDF]

open access: yesInternational Journal of Group Theory, 2018
‎In this paper we highlight the connection between certain classes of regular subgroups of the affine group‎ ‎$AGL_n(F)$‎, ‎$F$ a field‎, ‎and associative nilpotent $F$-algebras of dimension $n$‎.
Marco Pellegrini
doaj   +1 more source

Computing Segre classes in arbitrary projective varieties [PDF]

open access: yesJournal of symbolic computation, 2015
We give an algorithm for computing Segre classes of subschemes of arbitrary projective varieties by computing degrees of a sequence of linear projections.
Corey Harris
semanticscholar   +1 more source

Automorphism group schemes of bielliptic and quasi-bielliptic surfaces [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2022
Bielliptic and quasi-bielliptic surfaces form one of the four classes of minimal smooth projective surfaces of Kodaira dimension $0$. In this article, we determine the automorphism schemes of these surfaces over algebraically closed fields of arbitrary ...
Gebhard Martin
doaj   +1 more source

Chow transformation of coherent sheaves

open access: yesComplex Manifolds, 2023
We define a dual of the Chow transformation of currents on any complex projective manifold. This integral transformation is a factor of a left inverse of the Chow transformation and its composition with the Chow transformation is a right inverse of a ...
Méo Michel
doaj   +1 more source

THE FIRST U-EXTENSION MODULE AS CLASSES OF SHORT U-EXACT SEQUENCES

open access: yesJurnal Matematika UNAND, 2021
Inspired by the notions of the U-exact sequence introduced by Davvaz and Parnian-Garamaleky in 1999, and of the chain U-complex introduced by Davvaz and Shabani-Solt in 2002, Mahatma and Muchtadi-Alamsyah in 2017 developed the concept of the U-projective
Yudi Mahatma
doaj   +1 more source

The Projective Special Linear Group PSL(4,2). [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2009
:The present study deals with conjugacy classes for the projective linear group. The study of conjugacy classes has a great and important role; in hand it is an introductory step to study the general linear group and also the maximal subgroup in it.We ...
Muthana A. Mahmood, Alaa Adnan Auad
doaj   +1 more source

Degrees of iterates of rational maps on normal projective varieties [PDF]

open access: yesProceedings of the London Mathematical Society, 2017
Let X be a normal projective variety defined over an algebraically closed field of arbitrary characteristic. We study the sequence of intermediate degrees of the iterates of a dominant rational selfmap of X , recovering former results by Dinh and Sibony (
Nguyen-Bac Dang
semanticscholar   +1 more source

Proper classes and Gorensteinness in extriangulated categories [PDF]

open access: yesJournal of Algebra, 2019
Extriangulated categories were introduced by Nakaoka and Palu as a simultaneous generalization of exact categories and triangulated categories. A notion of proper class in an extriangulated category is defined in this paper.
Jiangsheng Hu   +2 more
semanticscholar   +1 more source

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