Results 21 to 30 of about 2,776 (226)

Lower bounds for the normalized height and non-dense subsets of varieties in an abelian variety [PDF]

open access: yes, 2010
This work is the third part of a series of papers. In the first two we considered curves and varieties in a power of an elliptic curve. Here we deal with subvarieties of an abelian variety in general.
Viada, Evelina
core   +1 more source

Multiparty Non-Interactive Key Exchange and More From Isogenies on Elliptic Curves

open access: yesJournal of Mathematical Cryptology, 2020
We describe a framework for constructing an efficient non-interactive key exchange (NIKE) protocol for n parties for any n ≥ 2. Our approach is based on the problem of computing isogenies between isogenous elliptic curves, which is believed to be ...
Boneh Dan   +7 more
doaj   +1 more source

On p-Adic Estimates of Weights in Abelian Codes over Galois Rings [PDF]

open access: yes, 2005
Let p be a prime. We prove various analogues and generalizations of McEliece's theorem on the p-divisibility of weights of words in cyclic codes over a finite field of characteristic p. Here we consider Abelian codes over various Galois rings.
Katz, Daniel Jerome
core   +1 more source

Abelian variety with Tate-Shafarevich group of non-square order [PDF]

open access: yes, 2022
Every abelian variety has an associated Tate-Shafarevich group defined using cohomology. Cassels and Tate proved the existence of a pairing on this group.
Troletti, Daniele
core  

Reduction of Abelian Varieties [PDF]

open access: yes, 2000
We study semistable reduction and torsion points of abelian varieties. In particular, we give necessary and sufficient conditions for an abelian variety to have semistable reduction. We also study Néron models of abelian varieties with potentially good reduction and torsion points of small order.
Silverberg, A., Zarhin, Yu. G.
openaire   +2 more sources

Solvable Lie A-algebras. [PDF]

open access: yes, 2011
A finite-dimensional Lie algebra $L$ over a field $F$ is called an $A$-algebra if all of its nilpotent subalgebras are abelian. This is analogous to the concept of an $A$-group: a finite group with the property that all of its Sylow subgroups are abelian.
Towers, David A., David A. Towers
core   +1 more source

New models for some free algebras of small ranks

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2023
Dimonoids, generalized digroups and doppelsemigroups are algebras defined on a set with two binary associative operations. The notion of a dimonoid was introduced by J.-L.
A.V. Zhuchok, G.F. Pilz
doaj   +1 more source

Rationally connected rational double covers of primitive Fano varieties [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2020
We show that for a Zariski general hypersurface $V$ of degree $M+1$ in ${\mathbb P}^{M+1}$ for $M\geqslant 5$ there are no Galois rational covers $X\dashrightarrow V$ of degree $d\geqslant 2$ with an abelian Galois group, where $X$ is a rationally ...
Aleksandr V. Pukhlikov
doaj   +1 more source

Homogeneous spaces over an abelian variety [PDF]

open access: yes
In this paper, we study a question of Colliot-Thélène and Iyer concerning the existence of rational sections in families of homogeneous spaces over an abelian variety, after base change by a suitable étale isogeny of the abelian variety.
Bruneaux, Margot
core   +6 more sources

Large U(1) charges in F-theory

open access: yesJournal of High Energy Physics, 2018
We show that massless fields with large abelian charges (up to at least q = 21) can be constructed in 6D F-theory models with a U(1) gauge group. To show this, we explicitly construct F-theory Weierstrass models with nonabelian gauge groups that can be ...
Nikhil Raghuram, Washington Taylor
doaj   +1 more source

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