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Real Legendrian subvarieties are classical objects of differential geometry and classical mechanics and they have been studied since antiquity. However, complex Legendrian subvarieties are much more rigid and have more exceptional…

Algebraic Geometry · Mathematics 2013-05-16 Jarosław Buczyński

We present various facts on the graded Betti table of a projectively embedded toric surface, expressed in terms of the combinatorics of its defining lattice polygon. These facts include explicit formulas for a number of entries, as well as…

Algebraic Geometry · Mathematics 2016-12-05 Wouter Castryck , Filip Cools , Jeroen Demeyer , Alexander Lemmens

We present an explicit expression for the normalized height of a projective toric variety. This expression decomposes as a sum of local contributions, each term being the integral of a certain function, concave and piecewise linear-affine.…

Number Theory · Mathematics 2007-05-23 Patrice Philippon , Martin Sombra

Squashed toric sigma models are a class of sigma models whose target space is a toric manifold in which the torus fibration is squashed away from the fixed points so as to produce a neck-like region. The elliptic genera of squashed…

High Energy Physics - Theory · Physics 2019-03-27 Rajesh Kumar Gupta , Sameer Murthy , Caner Nazaroglu

In this paper we study algebraic supergroups and their coadjoint orbits as affine algebraic supervarieties. We find an algebraic deformation quantization of them that can be related to the fuzzy spaces of non commutative geometry.

Quantum Algebra · Mathematics 2009-11-10 R. Fioresi , M. A. Lledo

We introduce the concept of a fuzzy aura topological space $(X, \tilde{\tau}, \tilde{a})$, obtained by equipping a Chang-type fuzzy topological space $(X, \tilde{\tau})$ with a fuzzy scope function $\tilde{a} : X \to \tilde{\tau}$…

General Topology · Mathematics 2026-02-17 Açıkgöz

Strong-uniform fuzzy partition is necessary for the accuracy of fuzzy partition-based histograms. Most previous research focused on constructing one-dimensional strong-uniform fuzzy partitions. While to the best of our knowledge, few have…

General Mathematics · Mathematics 2022-01-17 Zhi Zeng , Ting Wang

Almost toric manifolds form a class of singular Lagrangian fibered symplectic manifolds that is a natural generalization of toric manifolds. Notable examples include the K3 surface, the phase space of the spherical pendulum and rational…

Symplectic Geometry · Mathematics 2007-05-23 Naichung Conan Leung , Margaret Symington

This article is the first part of series of articles that aim to present the foundations for fuzzy variational calculus for functions taking values in the space of linearly correlated fuzzy numbers $\mathbb{R}_{\mathcal{F}(A)}$. Recall that…

General Mathematics · Mathematics 2025-06-05 Gastão S. F. Frederico , Estevão Esmi , Laécio C. Barros

We study the topological properties of fuzzy sphere. We show that the topological charge is only defined modulo N+1, that is finite integer quotient Z_{N+1}, where N is a cut-off spin of fuzzy sphere. This periodic structure on topological…

High Energy Physics - Theory · Physics 2016-09-06 Chuan-Tsung Chan , Chiang-Mei Chen , Hyun Seok Yang

This paper gives an explicit computation of the category of constructible sheaves on a toric variety (with respect to the stratification by torus orbits). Over the complex numbers, this simplifies a description due to Braden and Lunts. The…

Algebraic Geometry · Mathematics 2024-10-10 Remy van Dobben de Bruyn

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

We compute the integral homology (including torsion), the topological K-theory, and the Hodge structure on cohomology of Calabi-Yau threefold hypersurfaces and complete intersections in Gorenstein toric Fano varieties. The methods are…

Algebraic Geometry · Mathematics 2014-11-11 Charles F. Doran , John W. Morgan

From a finite set in a lattice, we can define a toric variety embedded in a projective space. In this paper, we give a combinatorial description of the dual defect of the toric variety using the structure of the finite set as a Cayley sum…

Algebraic Geometry · Mathematics 2019-12-12 Katsuhisa Furukawa , Atsushi Ito

Given a semi-algebraic set S, we study compactifications of S that arise from embeddings into complete toric varieties. This makes it possible to describe the asymptotic growth of polynomial functions on S in terms of combinatorial data. We…

Algebraic Geometry · Mathematics 2017-05-17 Daniel Plaumann , Claus Scheiderer

We compute the Cox ring of an embedded variety $X \subseteq Z$ within a Mori dream space, under the assumption that the pullback map induces an isomorphism at the level of divisor class groups. We show that the Cox ring of $X$ is the…

Algebraic Geometry · Mathematics 2026-05-22 Cristóbal Herrera , Antonio Laface , Luca Ugaglia

We construct and study noncommutative deformations of toric varieties by combining techniques from toric geometry, isospectral deformations, and noncommutative geometry in braided monoidal categories. Our approach utilizes the same fan…

Quantum Algebra · Mathematics 2015-12-16 Lucio Cirio , Giovanni Landi , Richard J. Szabo

We construct covariant coordinate transformations on the fuzzy sphere and utilize these to construct a covariant map from a gauge theory on the fuzzy sphere to a gauge theory on the ordinary sphere. We show that this construction coincides…

High Energy Physics - Theory · Physics 2007-05-23 Jesper M. Grimstrup , Thordur Jonsson , Larus Thorlacius

Fuzzy implication functions have been widely investigated, both in theoretical and practical fields. The aim of this work is to continue previous works related to fuzzy implications constructed by means of non necessarily associative…

In this paper, the fuzzy Hausdorff distance is studied, and also the fuzzy equidistant set for two points of a fuzzy metric space is introduced. Here, the fuzzy metric space has been redefined using recently developed fuzzy geometry, and…

General Mathematics · Mathematics 2025-12-19 Biswajit Singha , Ronald Manríquez , Cristian Carvajal , Debjani Chakraborty