Results 1 to 10 of about 340 (28)

On genus one mirror symmetry in higher dimensions and the BCOV conjectures

open access: yesForum of Mathematics, Pi, 2022
The mathematical physicists Bershadsky–Cecotti–Ooguri–Vafa (BCOV) proposed, in a seminal article from 1994, a conjecture extending genus zero mirror symmetry to higher genera.
Dennis Eriksson   +2 more
doaj   +1 more source

The most efficient indifferentiable hashing to elliptic curves of j-invariant 1728

open access: yesJournal of Mathematical Cryptology, 2022
This article makes an important contribution to solving the long-standing problem of whether all elliptic curves can be equipped with a hash function (indifferentiable from a random oracle) whose running time amounts to one exponentiation in the basic ...
Koshelev Dmitrii
doaj   +1 more source

Smoothing toroidal crossing spaces

open access: yesForum of Mathematics, Pi, 2021
We prove the existence of a smoothing for a toroidal crossing space under mild assumptions. By linking log structures with infinitesimal deformations, the result receives a very compact form for normal crossing spaces.
Simon Felten, Matej Filip, Helge Ruddat
doaj   +1 more source

Conic bundles that are not birational to numerical Calabi--Yau pairs [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2017
Let $X$ be a general conic bundle over the projective plane with branch curve of degree at least 19. We prove that there is no normal projective variety $Y$ that is birational to $X$ and such that some multiple of its anticanonical divisor is effective ...
János Kollár
doaj   +1 more source

Tropically constructed Lagrangians in mirror quintic threefolds

open access: yesForum of Mathematics, Sigma, 2020
We use tropical curves and toric degeneration techniques to construct closed embedded Lagrangian rational homology spheres in a lot of Calabi-Yau threefolds. The homology spheres are mirror dual to the holomorphic curves contributing to the Gromov-Witten
Cheuk Yu Mak, Helge Ruddat
doaj   +1 more source

On the rigidity of stable maps to Calabi-Yau threefolds [PDF]

open access: yes, 2006
If X is a nonsingular curve in a Calabi--Yau threefold Y whose normal bundle N_{X/Y} is a generic semistable bundle, are the local Gromov-Witten invariants of X well defined? For X of genus two or higher, the issues are subtle.
Bryan, Jim, Pandharipande, Rahul
core   +2 more sources

Analytic continuation of better-behaved GKZ systems and Fourier-Mukai transforms [PDF]

open access: yesÉpijournal de Géométrie Algébrique
We study the relationship between solutions to better-behaved GKZ hypergeometric systems near different large radius limit points, and their geometric counterparts given by the $K$-groups of the associated toric Deligne-Mumford stacks. We prove that the $
Zengrui Han
doaj   +1 more source

New Fourfolds from F-Theory [PDF]

open access: yes, 2015
In this paper, we apply Borcea-Voisin's construction and give new examples of fourfolds containing a del Pezzo surface of degree six, which admit an elliptic fibration on a smooth threefold.
Bini, Gilberto, Penegini, Matteo
core   +3 more sources

On solutions to Walcher's extended holomorphic anomaly equation [PDF]

open access: yes, 2007
We give a generalization of Yamaguchi--Yau's result to Walcher's extended holomorphic anomaly equation.Comment: 19 pages, 3 figures, (v2) a reference ...
Konishi, Yukiko, Minabe, Satoshi
core   +2 more sources

Rational curves on fibered Calabi-Yau manifolds [PDF]

open access: yes, 2018
We show that a smooth projective complex manifold of dimension greater than two endowed with an elliptic fiber space structure and with finite fundamental group always contains a rational curve, provided its canonical bundle is relatively trivial.
Diverio, Simone   +2 more
core   +2 more sources

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