Results 91 to 100 of about 39,153 (198)
Failure of the local-global principle for isotropy of quadratic forms over rational function fields
, 2017 We prove the failure of the local-global principle, with respect to all discrete valuations, for isotropy of quadratic forms over a rational function field of transcendence degree at least 2 over the complex numbers.
Auel, Asher, Suresh, V.
core
Numerical Ricci-flat metrics on K3
, 2006 We develop numerical algorithms for solving the Einstein equation on Calabi-Yau manifolds at arbitrary values of their complex structure and Kahler parameters.
Aspinwall P S +20 more
core +1 more source
Some transformations and integral representations of horn's functions
Revista Técnica de la Facultad de Ingeniería, 2011 Â Horn gave the general definition of hypergeometric functions of two variables. There are thirty four hypergeometric functions of two variables of this type. Fourteen functions are complete and the remaining twenty are the confluente cases.
V. Kim Tuan, S. L. Kalla
doaj
On a problem à la Kummer–Vandiver for function fields
Journal of Number Theory, 2013 We use Artin-Schreier base change to construct counterexamples to a Kummer-Vandiver type question for function fields.
Anglès, Bruno, Taelman, Lenny
openaire +3 more sources
, 2012 We review and extend the known constructions relating Kummer threefolds, Gopel systems, theta constants and their derivatives, and the GIT quotient for 7 points in P^2 to obtain an explicit expression for the Coble quartic. The Coble quartic was recently
Riccardo +2 more
core
, 2004 The formalism of graded Poisson-sigma models allows the construction of N=(2,2) dilaton supergravity in terms of a minimal number of fields. For the gauged chiral U(1) symmetry the full action, involving all fermionic contributions, is derived.
Alnowaiser +37 more
core +2 more sources
Two-Dilaton Theories in Two Dimensions from Dimensional Reduction
, 2001 Dimensional reduction of generalized gravity theories or string theories generically yields dilaton fields in the lower-dimensional effective theory. Thus at the level of D=4 theories, and cosmology many models contain more than just one scalar field (e ...
Brans +47 more
core +2 more sources
Computing isogenies between Jacobian of curves of genus 2 and 3 [PDF]
, 2019 We present a quasi-linear algorithm to compute isogenies between Jacobians of curves of genus 2 and 3 starting from the equation of the curve and a maximal isotropic subgroup of the l-torsion, for l an odd prime number, generalizing the V\'elu's formula ...
Milio, Enea
core +2 more sources
Exponential Kummer Coverings and Determinants of Hypergeometric Functions
Tokyo Journal of Mathematics, 1993 The generalized Aomoto-Gel'fand hypergeometric function (defined as an integral of differential form on some topological cycle) is considered and a direct proof of the ``determinant theorem'' is given. Let \(n\) be an integer such that \(n\geq 3\), \(\lambda_ 1,\dots, \lambda_ n\) and \(\alpha_ 1,\dots, \alpha_ n\) be real numbers such that \(\lambda_ ...
openaire +3 more sources
Kummer function and High energy String Scatterings
, 2008 8 pages. v2:9 pages,Eq.(14) was rigorous proved,Eqs added and 1 ref added. v3:typos corrected.
Ko, Sheng-Lan, Lee, Jen-Chi, Yang, Yi
openaire +2 more sources