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We introduce a notion of strict complete intersections with respect to Cox rings and we prove Galois descent for this new notion.

Algebraic Geometry · Mathematics 2020-03-16 Marta Pieropan

We propose a definition of when a triangulated category should be considered a complete intersection. We show (using work of Avramov and Gulliksen) that for the derived category of a complete local Noetherian commutative ring R, the…

Commutative Algebra · Mathematics 2009-06-23 D. J. Benson , J. P. C. Greenlees

In this paper we examine different problems regarding complete intersection varieties of high degree in a complex projective space. First we show how one can deduce hyperbolicity for generic complete intersection of high multidegree and…

Algebraic Geometry · Mathematics 2019-02-20 Damian Brotbek

For the family of graded lattice ideals of dimension 1, we establish a complete intersection criterion in algebraic and geometric terms. In positive characteristic, it is shown that all ideals of this family are binomial set theoretic…

Commutative Algebra · Mathematics 2024-02-07 Hiram H. Lopez , Rafael H. Villarreal

We prove a symmetric version of B\'ezout's theorem. More precisely, we show that the symmetric orbit type of a transverse intersection of complex symmetric hypersurfaces in projective space is determined by the degrees. In the projective…

Algebraic Geometry · Mathematics 2024-10-01 Samuel Lidz , Zachary Lihn , Adam Melrod

We obtain a coarse relationship between geometric intersection numbers of curves and the sum of their subsurface projection distances with explicit quasi-constants. By using this relationship, we give applications in the studies of the…

Geometric Topology · Mathematics 2017-09-12 Yohsuke Watanabe

Object goal visual navigation is a challenging task that aims to guide a robot to find the target object based on its visual observation, and the target is limited to the classes pre-defined in the training stage. However, in real…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Qianfan Zhao , Lu Zhang , Bin He , Hong Qiao , Zhiyong Liu

The main result is a wall crossing formula for central projections defined on submanifolds of a real projective space. Our formula gives the jump of the degree of such a projection when the center of the projection varies. The fact that the…

Algebraic Geometry · Mathematics 2014-04-04 Christian Okonek , Andrei Teleman

We consider several classes of complete intersection numerical semigroups, aris- ing from many different contexts like algebraic geometry, commutative algebra, coding theory and factorization theory. In particular, we determine all the…

Commutative Algebra · Mathematics 2014-04-08 Marco D'Anna , Vincenzo Micale , Alessio Sammartano

In this paper, we generalize our formalism of the elliptic virtual structure constants to hypersurfaces and complete intersections within certain weighted projective spaces possessing a single K\"ahler class.

Algebraic Geometry · Mathematics 2026-03-11 Masao Jinzenji , Ken Kuwata

Vector optimization problems are a generalization of multiobjective optimization in which the preference order is related to an arbitrary closed and convex cone, rather than the nonnegative octant. Due to its real life applications, it is…

Optimization and Control · Mathematics 2013-12-03 J. Y. Bello Cruz , G. C. Bento , G. Bouza Allende , R. F. B. Costa

The Hurwitz form of a projective variety characterizes linear spaces of complementary dimension which meet the variety non-transversally. We extend this notion to varieties in a product of projective spaces. This parallels the multigraded…

Algebraic Geometry · Mathematics 2026-02-24 Elizabeth Pratt , Luca Sodomaco , Bernd Sturmfels

Moduli spaces of stable maps to a smooth projective variety typically have several components. We express the virtual class of the moduli space of genus one stable maps to a smooth projective variety as a sum of virtual classes of the…

Algebraic Geometry · Mathematics 2018-09-13 Tom Coates , Cristina Manolache

We show that a perfect obstruction theory for a $\mathbb{G}_\text{m}$-gerbe determines a semi-perfect obstruction theory for its base, which is perfect if the gerbe is quasi-compact and affine-pointed. These results streamline the…

Algebraic Geometry · Mathematics 2020-09-22 F. Qu

This paper focuses on pose registration of different object instances from the same category. This is required in online object mapping because object instances detected at test time usually differ from the training instances. Our approach…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Qiaojun Feng , Nikolay Atanasov

This paper deals with properties of the algebraic variety defined as the set of zeros of a "typical" sequence of polynomials. We consider various types of "nice" varieties: set-theoretic and ideal-theoretic complete intersections,…

Number Theory · Mathematics 2015-12-18 Joachim von zur Gathen , Guillermo Matera

The concepts of fuzzy objects and their classes are described that make it possible to structurally represent knowledge about fuzzy and partially-defined objects and their classes. Operations over such objects and classes are also proposed…

Artificial Intelligence · Computer Science 2016-02-17 D. A. Terletskyi , A. I. Provotar

We prove a new effective recursion formula for computing all intersection indices (integrals of $\psi$ classes) on the moduli space of curves, inducting only on the genus.

Algebraic Geometry · Mathematics 2007-10-30 Kefeng Liu , Hao Xu

In this work, we propose a zero-shot learning method to effectively model knowledge transfer between classes via jointly learning visually consistent word vectors and label embedding model in an end-to-end manner. The main idea is to…

Computer Vision and Pattern Recognition · Computer Science 2019-05-17 Berkan Demirel , Ramazan Gokberk Cinbis , Nazli Ikizler-Cinbis

We construct virtual fundamental classes of Artin stacks over a Dedekind domain endowed with a perfect obstruction theory.

Algebraic Geometry · Mathematics 2015-07-27 Flavia Poma