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Any leafwise connection on a fibre bundle over a foliated manifold is proved to come from a connection on this fibre bundle.

Mathematical Physics · Physics 2007-05-23 G. Sardanashvily

A principal toric bundle $M$ is a complex manifold equipped with a free holomorphic action of a compact complex torus $T$. Such a manifold is fibered over $M/T$, with fiber $T$. We discuss the notion of positivity in fiber bundles and…

Algebraic Geometry · Mathematics 2014-02-26 Misha Verbitsky

Toric geometry provides a bridge between algebraic geometry and combinatorics of fans and polytopes. For each polarized toric variety (X,L) we have associated a polytope P. In this thesis we use this correspondence to study birational…

Algebraic Geometry · Mathematics 2016-11-26 Edilaine Ervilha Nobili

We study smoothness of toric quiver varieties. When a quiver $Q$ is defined with the identity dimension vector, the corresponding quiver variety is also a toric variety. So it has both fan representation and quiver representation. We work…

Algebraic Geometry · Mathematics 2022-04-20 Amir Nasr

In this article we prove, in a simple way, that for any complete toric variety, and for any Cartier divisor, the ring of global sections of multiples of the line bundle associated to the divisor is finitely generated.

alg-geom · Mathematics 2008-02-03 E. Javier Elizondo

We describe the quantum cohomology rings of a class of toric varieties. The description includes, in addition to the (already known) ring presentations, the (new) analogues for toric varieties of the sorts of quantum Giambelli formulas…

Algebraic Geometry · Mathematics 2007-05-23 Andrew Kresch

In this brief note, we show that every smooth toric variety over the field of complex numbers is an Oka manifold.

Algebraic Geometry · Mathematics 2013-10-16 Finnur Larusson

We compare two notions of $G$-fiber bundles and $G$-principal bundles in the literature, with an aim to clarify early results in equivariant bundle theory that are needed in current work of equivariant algebraic topology. We also give…

Algebraic Topology · Mathematics 2021-06-22 Foling Zou

We introduce and study the toric fiber product of two ideals in polynomial rings that are homogeneous with respect to the same multigrading. Under the assumption that the set of degrees of the variables form a linearly independent set, we…

Commutative Algebra · Mathematics 2007-05-23 Seth Sullivant

We study toric varieties over a field k that split in a Galois extension K/k using Galois cohomology with coefficients in the toric automorphism group. Part of this Galois cohomology fits into an exact sequence induced by the presentation…

Algebraic Geometry · Mathematics 2013-05-28 E. Javier Elizondo , Paulo Lima-Filho , Frank Sottile , Zach Teitler

Special fibrations of toric varieties have been used by physicists, e.g. the school of Candelas, to construct dual pairs in the study of Het/F-theory duality. Motivated by this, we investigate in this paper the details of toric morphisms…

Algebraic Geometry · Mathematics 2007-05-23 Yi Hu , Chien-Hao Liu , Shing-Tung Yau

This paper addresses the problem of constructing a cycle-level intersection theory for toric varieties. We show that by making one global choice, we can determine a cycle representative for the intersection of an equivariant Cartier divisor…

Algebraic Geometry · Mathematics 2007-05-23 Hugh Thomas

We characterise and investigate co-Higgs sheaves and associated algebraic and combinatorial invariants on toric varieties. In particular, we compute explicit examples.

Algebraic Geometry · Mathematics 2020-10-20 Klaus Altmann , Frederik Witt

We describe classes of toric varieties of codimension 2 which are either minimally defined by 3 binomial equations over any algebraically closed field, or are set-theoretic complete intersections in exactly one positive characteristic.

Commutative Algebra · Mathematics 2007-06-28 Margherita Barile

In this article we study the equivariant elliptic cohomology of complex toric varieties. We prove a partial reconstruction theorem showing that equivariant elliptic cohomology encodes considerable non-trivial information on the equivariant…

Algebraic Geometry · Mathematics 2022-10-21 Sarah Scherotzke , Nicolo Sibilla

Given a smooth and projective curve C and a smooth and projective toric variety X, we first describe a compactification of the space of morphisms from C to X representing a fixed homology class, and after we study the intersection theory on…

Algebraic Geometry · Mathematics 2007-05-23 Mihai Halic

We exhibit full exceptional collections of vector bundles on any smooth, Fano arithmetic toric variety whose split fan is centrally symmetric.

Algebraic Geometry · Mathematics 2020-06-17 Matthew R Ballard , Alexander Duncan , Patrick K. McFaddin

We consider the set of forms of a toric variety over an arbitrary field: those varieties which become isomorphic to a toric variety after base field extension. In contrast to most previous work, we also consider arbitrary isomorphisms…

Algebraic Geometry · Mathematics 2016-10-04 Alexander Duncan

We construct relatively bounded toroidal and toric models of relatively bounded fibrations over curves.

Algebraic Geometry · Mathematics 2026-03-06 Caucher Birkar

Let $X$ be a complete $\mathbb{Q}$-factorial toric variety. We explicitly describe the space $H^2(X,T_X)$ and the cup product map $H^1(X,T_X)\times H^1(X,T_X)\to H^2(X,T_X)$ in combinatorial terms. Using this, we give an example of a smooth…

Algebraic Geometry · Mathematics 2020-06-24 Nathan Ilten , Charles Turo
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