Results 11 to 20 of about 360 (22)

Krein-space operators determined by free product algebras induced by primes and graphs

open access: yesSpecial Matrices, 2017
In this paper, we introduce certain Krein-space operators induced by free product algebras induced by both primes and directed graphs. We study operator-theoretic properties of such operators by computing free-probabilistic data containing number ...
Cho Ilwoo, Jorgensen Palle E. T.
doaj   +1 more source

Toward a geometric analogue of Dirichlet's unit theorem [PDF]

open access: yes, 2014
In this note, we propose a geometric analogue of Dirichlet's unit theorem on arithmetic varieties, that is, if X is a normal projective variety over a finite field and D is a pseudo-effective Q-Cartier divisor on X, does it follow that D is Q-effective ...
Moriwaki, Atsushi
core   +3 more sources

Characterization of the numbers which satisfy the height reducing property

open access: yes, 2014
Let $\alpha$ be a complex number. We show that there is a finite subset $F$ of the ring of the rational integers $\mathbb{Z}$, such that $F\left[ \alpha\right] =\mathbb{Z}\left[ \alpha\right]$, if and only if $\alpha$ is an algebraic number whose ...
Akiyama, Shigeki   +2 more
core   +1 more source

On Mertens-Ces\`aro Theorem for Number Fields

open access: yes, 2015
Let $K$ be a number field with ring of integers $\mathcal O$. After introducing a suitable notion of density for subsets of $\mathcal O$, generalizing that of natural density for subsets of $\mathbb Z$, we show that the density of the set of coprime $m ...
Ferraguti, Andrea, Micheli, Giacomo
core   +1 more source

The product of a quartic and a sextic number cannot be octic

open access: yesOpen Mathematics
In this article, we prove that the product of two algebraic numbers of degrees 4 and 6 over Q{\mathbb{Q}} cannot be of degree 8. This completes the classification of so-called product-feasible triplets (a,b,c)∈N3\left(a,b,c)\in {{\mathbb{N}}}^{3} with a ...
Dubickas Artūras, Maciulevičius Lukas
doaj   +1 more source

Reciprocal Monogenic Septinomials of Degree 2n3

open access: yesAnnales Mathematicae Silesianae
We prove a new irreducibility criterion for certain septinomials in ℤ[x], and we use this result to construct infinite families of reciprocal septinomials of degree 2n3 that are monogenic for all n ≥ 1.
Jones Lenny
doaj   +1 more source

An elementary approach to toy models for D. H. Lehmer's conjecture

open access: yes, 2010
In 1947, Lehmer conjectured that the Ramanujan's tau function $\tau (m)$ never vanishes for all positive integers $m$, where $\tau (m)$ is the $m$-th Fourier coefficient of the cusp form $\Delta_{24}$ of weight 12.
B. B. Venkov   +8 more
core   +1 more source

Hasse-Minkowski theorem for quadratic forms on Mordell-Weil type groups

open access: yes, 2017
In this paper we investigate an analogue of Hasse-Minkowski theorem for quadratic forms on Mordell-Weil type groups over number fields like $S$-units, abelian varieties with trivial ring of endomorphisms and odd algebraic $K$-theory ...
Barańczuk, Stefan
core  

On the distribution of multiplicatively dependent vectors

open access: yes, 2019
In this paper, we study the distribution of multiplicatively dependent vectors. For example, although they have zero Lebesgue measure, they are everywhere dense both in $\R^n$ and $\C^n$.
Sha, Min   +2 more
core  

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