Results 31 to 40 of about 26,779 (258)

The tadpole conjecture in asymptotic limits

open access: yesJournal of High Energy Physics, 2022
The tadpole conjecture suggests that the complete stabilization of complex structure deformations in Type IIB and F-theory flux compactifications is severely obstructed by the tadpole bound on the fluxes.
Mariana Graña   +4 more
doaj   +1 more source

Variations of Hodge Structure Considered as an Exterior Differential System: Old and New Results

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2009
This paper is a survey of the subject of variations of Hodge structure (VHS) considered as exterior differential systems (EDS). We review developments over the last twenty-six years, with an emphasis on some key examples.
James Carlson   +2 more
doaj   +1 more source

On the coniveau of certain sub-Hodge structures

open access: yes, 2012
We study the generalized Hodge conjecture for certain sub-Hodge structure defined as the kernel of the cup product map with a big cohomology class, which is of Hodge coniveau at least 1. As predicted by the generalized Hodge conjecture, we prove that the
Fu, Lie
core   +5 more sources

The Hodge conjecture for general Prym varieties [PDF]

open access: yesJournal of Algebraic Geometry, 2002
The space of Hodge cycles of the general Prym variety is proved to be generated by its Neron-Severi group.
Biswas, Indranil, Paranjape, Kapil H.
openaire   +2 more sources

Lorentzian polynomials on cones

open access: yesForum of Mathematics, Sigma
Inspired by the theory of hyperbolic polynomials and Hodge theory, we develop the theory of Lorentzian polynomials on cones. This notion captures the Hodge-Riemann relations of degree zero and one.
Petter Brändén, Jonathan Leake
doaj   +1 more source

Hodge loci and absolute Hodge classes [PDF]

open access: yes, 2006
We combine Deligne's global invariant cycle theorem, and the algebraicity theorem of Cattani, Deligne and Kaplan, for the connected components of the locus of Hodge classes, to conclude that under simple assumptions these components are defined over ...
Voisin, Claire
core   +2 more sources

Baseline Regional Cholinergic Denervation Predicts Cognitive Trajectories in Moderate Parkinson Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cognitive decline is a disabling and variable feature of Parkinson disease (PD). While cholinergic system degeneration is linked to cognitive impairments in PD, most prior research reported cross‐sectional associations. We aimed to fill this gap by investigating whether baseline regional cerebral vesicular acetylcholine transporter ...
Taylor Brown   +6 more
wiley   +1 more source

A one parameter family of Calabi-Yau manifolds with attractor points of rank two

open access: yesJournal of High Energy Physics, 2020
In the process of studying the ζ-function for one parameter families of Calabi-Yau manifolds we have been led to a manifold, first studied by Verrill, for which the quartic numerator of the ζ-function factorises into two quadrics remarkably often.
Philip Candelas   +3 more
doaj   +1 more source

Hodge theory of cyclic covers branched over a union of hyperplanes

open access: yes, 2013
Suppose that Y is a cyclic cover of projective space branched over a hyperplane arrangement D, and that U is the complement of the ramification locus in Y.
Arapura   +13 more
core   +1 more source

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