Results 21 to 30 of about 1,118 (197)

On Fano Schemes of Toric Varieties [PDF]

open access: yesSIAM Journal on Applied Algebra and Geometry, 2017
Let $X_\mathcal{A}$ be the projective toric variety corresponding to a finite set of lattice points $\mathcal{A}$. We show that irreducible components of the Fano scheme $\mathbf{F}_k(X_\mathcal{A})$ parametrizing $k$-dimensional linear subspaces of $X_\mathcal{A}$ are in bijection to so-called maximal Cayley structures for $\mathcal{A}$. We explicitly
Nathan Owen Ilten, Alexandre Zotine
openaire   +3 more sources

Asymptotic Chow Semistability Implies Ding Polystability for Gorenstein Toric Fano Varieties

open access: yesMathematics, 2023
In this paper, we prove that if a Gorenstein toric Fano variety (X,−KX) is asymptotically Chow semistable, then it is Ding polystable with respect to toric test configurations (Theorem 3).
Naoto Yotsutani
doaj   +1 more source

Simplicity of tangent bundles of smooth horospherical varieties of Picard number one

open access: yesComptes Rendus. Mathématique, 2022
Recently, Kanemitsu has discovered a counterexample to the long-standing conjecture that the tangent bundle of a Fano manifold of Picard number one is (semi)stable. His counterexample is a smooth horospherical variety.
Hong, Jaehyun
doaj   +1 more source

Finite $F$-representation type for homogeneous coordinate rings of non-Fano varieties [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2023
Finite $F$-representation type is an important notion in characteristic-$p$ commutative algebra, but explicit examples of varieties with or without this property are few.
Devlin Mallory
doaj   +1 more source

FANO HYPERSURFACES WITH ARBITRARILY LARGE DEGREES OF IRRATIONALITY

open access: yesForum of Mathematics, Sigma, 2020
We show that complex Fano hypersurfaces can have arbitrarily large degrees of irrationality. More precisely, if we fix a Fano index $e$, then the degree of irrationality of a very general complex Fano hypersurface of index $e$ and dimension n is bounded ...
NATHAN CHEN, DAVID STAPLETON
doaj   +1 more source

X‐ray magnetic circular dichroism

open access: yesMajor Reference Works, Page 508-515., 2022
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
Gerrit van der Laan C. Chantler   +2 more
wiley  

+1 more source

Invariants of Fano Varieties in Families [PDF]

open access: yesMoscow Mathematical Journal, 2018
11 pages. Corrected mistake in appendix.
Gounelas, Frank, Javanpeykar, Ariyan
openaire   +3 more sources

On the classification of toric fano varieties [PDF]

open access: yesDiscrete & Computational Geometry, 1988
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Hilbert series, machine learning, and applications to physics

open access: yesPhysics Letters B, 2022
We describe how simple machine learning methods successfully predict geometric properties from Hilbert series (HS). Regressors predict embedding weights in projective space to ∼1 mean absolute error, whilst classifiers predict dimension and Gorenstein ...
Jiakang Bao   +5 more
doaj   +1 more source

A proposal for (0,2) mirrors of toric varieties

open access: yesJournal of High Energy Physics, 2017
In this paper we propose (0,2) mirrors for general Fano toric varieties with special tangent bundle deformations, corresponding to subsets of toric deformations.
Wei Gu, Eric Sharpe
doaj   +1 more source

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