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We generalize the classical Bernstein-Gelfand-Gelfand correspondence to complete intersections in toric varieties.

Representation Theory · Mathematics 2007-06-12 Vladimir Baranovsky

We analyze adjunction and inversion of adjunction for the $F$-purity of divisor pairs in characteristic $p > 0$. In this vein, we give a complete answer for principal divisors under $\mathbb{Q}$-Gorenstein assumptions but without…

Algebraic Geometry · Mathematics 2023-05-30 Thomas Polstra , Austyn Simpson , Kevin Tucker

We define one-point disk invariants of a smooth projective Calabi-Yau (CY) complete intersection (CI) in the presence of an anti-holomorphic involution via localization. We show that these invariants are rational numbers and obtain a…

Algebraic Geometry · Mathematics 2015-06-16 Alexandra Popa

In our previous work, we provided an algebraic proof of the Zinger's comparison formula between genus one Gromov-Witten invariants and reduced invariants when the target space is a complete intersection of dimension two or three in a…

Algebraic Geometry · Mathematics 2020-04-17 Sanghyeon Lee , Jeongseok Oh

We consider a possibility of the existence of intersection homology morphism, which would be associated to a map of analytic varieties. We assume that the map is an inclusion of codimension one. Then the existence of a morphism follows from…

Algebraic Geometry · Mathematics 2007-05-23 Andrzej Weber

We provide an easily verifiable condition for local $k$-connectedness of an inverse limit of polyhedra.

General Topology · Mathematics 2019-02-19 G. C. Bell , A. Nagórko

Shokurov's ACC Conjecture says that the set of all log canonical thresholds on varieties of bounded dimension satisfies the Ascending Chain Condition. This conjecture was proved for log canonical thresholds on smooth varieties in [EM1].…

Algebraic Geometry · Mathematics 2009-01-09 Tommaso de Fernex , Mircea Mustata

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

We compute the alpha invariant of any smooth complex projective spin complete intersection of complex dimension $1 \; ({\rm mod} \; 4)$. We prove that the alpha invariant depends only on the total degree and Pontryagin classes. Our findings…

Differential Geometry · Mathematics 2020-02-18 David Baraglia

In this paper we give conditions on a homogeneous polynomial for which the associated graded Artin algebra is a complete intersection.

Commutative Algebra · Mathematics 2024-05-31 Joan Elias

The contents is changed.

Algebraic Geometry · Mathematics 2016-09-07 Masanori Asakura , Shuji Saito

The exposition has been significantly altered, hopefully improved.

alg-geom · Mathematics 2008-02-03 J. M. Landsberg

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 prove the Geometric Arveson-Douglas Conjecture for a special case which allow some singularity on $\partial{\mathbb{B}_n}$. More precisely, we show that if a variety can be decomposed into two varieties, each having nice…

Functional Analysis · Mathematics 2017-04-14 Ronald G. Douglas , Yi Wang

This paper investigates type isomorphism in a lambda-calculus with intersection and union types. It is known that in lambda-calculus, the isomorphism between two types is realised by a pair of terms inverse one each other. Notably,…

Logic in Computer Science · Computer Science 2015-08-12 Mario Coppo , Mariangiola Dezani-Ciancaglini , Ines Margaria , Maddalena Zacchi

In this dissertation, we explore the structure of inversion graphs of permutations--a class of graphs that naturally arises by representing each permutation as a graph, where vertices correspond to entries and edges encode inversions.…

Combinatorics · Mathematics 2025-06-30 Sean Mandrick

Classically, the projective duality between joins of varieties and the intersections of varieties only holds in good cases. In this paper, we show that categorically, the duality between joins and intersections holds in the framework of…

Algebraic Geometry · Mathematics 2018-11-14 Qingyuan Jiang , Naichung Conan Leung

We prove relative versions of many earlier results about almost invariant sets and splittings of groups. In particular, we prove a relative version of the algebraic torus theorem, and we prove the existence and uniqueness of relative…

Geometric Topology · Mathematics 2025-02-04 Peter Scott , Gadde Swarup

In this paper we recall the construction and basic properties of complex Shimura varieties and show that these properties actually characterize them. This characterization immediately implies the explicit form of Kazhdan's theorem on the…

Number Theory · Mathematics 2007-05-23 Yakov Varshavsky

In this paper, we give explicit combinatorial descriptions for toric extremal contractions under the relative setting, where varieties do not need to be complete. Fujino's completion theorem is the key to the main result. As applications,…

Algebraic Geometry · Mathematics 2007-05-23 Hiroshi Sato