Results 21 to 30 of about 496,396 (282)

Algebraic number theory and code design for Rayleigh fading channels [PDF]

open access: yes, 2004
Algebraic number theory is having an increasing impact in code design for many different coding applications, such as single antenna fading channels and more recently, MIMO systems.
Oggier, F., Viterbo, E.
core   +1 more source

Toral Algebraic Sets and Function Theory on Polydisks [PDF]

open access: yes, 2005
A toral algebraic set $A$ is an algebraic set in $\C^n$ whose intersection with $\T^n$ is sufficiently large to determine the holomorphic functions on $A$.
Agler, Jim   +2 more
core   +3 more sources

Topological Indices of Graphs from Vector Spaces

open access: yesMathematics, 2023
Topological indices are numbers that are applied to a graph and can be used to describe specific graph properties through algebraic structures. Algebraic graph theory is a helpful tool in a range of chemistry domains.
Krishnamoorthy Mageshwaran   +3 more
doaj   +1 more source

An analogue of Bauer’s theorem for closed orbits of skew products [PDF]

open access: yes, 2008
In this article we prove an analogue of Bauer’s theorem from algebraic number theory in the context of hyperbolic ...
Parry, William, Pollicott, Mark
core   +2 more sources

Weierstrass points on modular curves X0(N) fixed by the Atkin–Lehner involutions [PDF]

open access: yesArab Journal of Mathematical Sciences, 2023
Purpose – The authors have determined whether the points fixed by all the full and the partial Atkin–Lehner involutions WQ on X0(N) for N ≤ 50 are Weierstrass points or not.
Mustafa Bojakli, Hasan Sankari
doaj   +1 more source

Construction of Complex Lattice Codes via Cyclotomic Fields

open access: yesTrends in Computational and Applied Mathematics, 2022
Through algebraic number theory and Construction $A$ we extend an algebraic procedure which generates complex lattice codes from the polynomial ring \mathbb{F}_{2}[x]/(x^{n}-1), where \mathbb{F}_{2}=\{0,1\}, by using ideals from the generalized ...
E. D. Carvalho   +3 more
doaj   +1 more source

A new method for solving the elliptic curve discrete logarithm problem [PDF]

open access: yesGroups, Complexity, Cryptology, 2021
The elliptic curve discrete logarithm problem is considered a secure cryptographic primitive. The purpose of this paper is to propose a paradigm shift in attacking the elliptic curve discrete logarithm problem.
Ansari Abdullah   +2 more
doaj   +1 more source

A Note on Divisible Points of Curves [PDF]

open access: yes, 2014
Let $C$ be an irreducible algebraic curve defined over a number field and inside an algebraic torus of dimension at least 3. We partially answer a question posed by Levin on points on $C$ for which a non-trivial power lies again on $C$.
Bays, Martin, Habegger, Philipp
core   +1 more source

Formal deformations of the algebra of Jacobi forms and Rankin–Cohen brackets

open access: yesComptes Rendus. Mathématique, 2021
This work is devoted to the algebraic and arithmetic properties of Rankin–Cohen brackets allowing to define and study them in several natural situations of number theory.
Choie, YoungJu   +3 more
doaj   +1 more source

Sur l'existence du sch\'ema en groupes fondametal [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2020
Let $S$ be a Dedekind scheme, $X$ a connected $S$-scheme locally of finite type and $x\in X(S)$ a section. The aim of the present paper is to establish the existence of the fundamental group scheme of $X$, when $X$ has reduced fibers or when $X$ is ...
Marco Antei   +2 more
doaj   +1 more source

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