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We present an overview of a theory of complex dimensions of self-similar fractal strings, and compare this theory to the theory of varieties over a finite field from the geometric and the dynamical point of view. Then we combine the several…

Number Theory · Mathematics 2007-05-23 Michel L. Lapidus , Machiel van Frankenhuijsen

In the present article, we investigate the topology of real toric varieties, especially those whose torus is not split over the field of real numbers. We describe some canonical fibrations associated to their real loci. Then, we establish…

Algebraic Geometry · Mathematics 2025-10-20 Jules Chenal , Matilde Manzaroli

Extending work of Bielawski-Dancer and Konno, we develop a theory of toric hyperkahler varieties, which involves toric geometry, matroid theory and convex polyhedra. The framework is a detailed study of semi-projective toric varieties,…

Algebraic Geometry · Mathematics 2007-05-23 Tamas Hausel , Bernd Sturmfels

In this article we review some recent developments in heterotic compactifications. In particular we review an ``inherently toric'' description of certain sheaves, called equivariant sheaves, that has recently been discussed in the physics…

High Energy Physics - Theory · Physics 2015-06-26 A. Knutson , E. Sharpe

We introduce tropically unirational varieties, which are subvarieties of tori that admit dominant rational maps whose tropicalisation is surjective. The central (and unresolved) question is whether all unirational varieties are tropically…

Algebraic Geometry · Mathematics 2012-05-03 Jan Draisma , Bart Frenk

Using the notion of a valuation into the semifield of piecewise linear functions, we give a classification of torus equivariant flat families of finite type over a toric variety base, by certain piecewise linear maps between fans. As a…

Algebraic Geometry · Mathematics 2022-10-12 Kiumars Kaveh , Christopher Manon

We classify 1-dimensional connected dually flat manifolds $M$ that are toric in the sense of [Molitor, arXiv:2109.04839], and show that the corresponding torifications are complex space forms. Special emphasis is put on the case where M is…

Differential Geometry · Mathematics 2023-09-22 Danuzia Figueirêdo , Mathieu Molitor

We study deformations of affine toric varieties. The entire deformation theory of these singularities is encoded by the so-called versal deformation. The main goal of our paper is to construct the homogeneous part of some degree -R of this,…

Algebraic Geometry · Mathematics 2022-06-13 Klaus Altmann , Alexandru Constantinescu , Matej Filip

We study the conjecture due to V.\,V. Shokurov on characterization of toric varieties. We also consider one generalization of this conjecture. It is shown that none of the characterizations holds true in dimension $\ge 3$. Some weaker…

Algebraic Geometry · Mathematics 2026-02-12 Ilya Karzhemanov

In this paper we give a re-normalization of the supertrace on the category of representations of Lie superalgebras of type I, by a kind of modified superdimension. The genuine superdimensions and supertraces are generically zero. However,…

Representation Theory · Mathematics 2007-11-28 Nathan Geer , Bertrand Patureau-Mirand

In this paper we illustrate an algorithmic procedure which allows to build projective wonderful models for the complement of a toric arrangement in a n-dimensional algebraic torus T. The main step of the construction is a combinatorial…

Algebraic Geometry · Mathematics 2016-09-01 Corrado De Concini , Giovanni Gaiffi

The goal of this paper is to define families of toric varieties and to study their properties. These families are locally trivial fibrations over some base, whose fibres are isomorphic to a fixed complete toric variety. The study is…

Algebraic Geometry · Mathematics 2007-05-23 Mihai Halic

We study compactifications of subvarieties of algebraic tori defined by imposing a sufficiently fine polyhedral structure on their non-archimedean amoebas. These compactifications have many nice properties, for example any k boundary…

Algebraic Geometry · Mathematics 2007-05-23 Jenia Tevelev

We introduce a torsor-theoretic obstruction to equivariant unirationality and show that it is also sufficient for actions of finite groups on toric varieties arising from automorphisms of the torus.

Algebraic Geometry · Mathematics 2025-06-10 Andrew Kresch , Yuri Tschinkel

We provide a natural interpretation of the secondary Euler characteristic and introduce higher Euler characteristics. For a compact oriented manifold of odd dimension, the secondary Euler characteristic recovers the Kervaire…

K-Theory and Homology · Mathematics 2015-09-18 Niranjan Ramachandran

We describe polarized complexity-one T-varieties combinatorially in terms of so-called divisorial polytopes, and show how geometric properties of such a variety can be read off the corresponding divisorial polytope. We compare our…

Algebraic Geometry · Mathematics 2012-11-20 Nathan Owen Ilten , Hendrik Süß

We introduce an algebraic method for describing the Hodge filtration of degenerating hypersurfaces in projective toric varieties. For this purpose, we show some fundamental properties of logarithmic differential forms on proper equivariant…

Algebraic Geometry · Mathematics 2007-05-23 Atsushi Ikeda

We combine the Bondal-Uehara method for producing exceptional collections on toric varieties with a result of the first author and Favero to expand the set of varieties satisfying Orlov's Conjecture on derived dimension.

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

We study certain toric Gorenstein varieties with isolated singularities which are the quotient spaces of generic unimodular representations by the one-dimensional torus, or by the product of the one-dimensional torus with a finite abelian…

Algebraic Geometry · Mathematics 2024-11-28 Xiaojun Chen , Leilei Liu , Jieheng Zeng

We investigate the geometry of Legendrian complex projective manifolds $X\subset\PP V$. By definition, this means $V$ is a complex vector space of dimension $2n+2$, endowed with a symplectic form, and the affine tangent space to $X$ at each…

Algebraic Geometry · Mathematics 2007-05-23 J. M. Landsberg , L. Manivel
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