Results 1 to 10 of about 379 (34)

Ramanujan’s function k(τ)=r(τ)r2(2τ) and its modularity

open access: yesOpen Mathematics, 2020
We study the modularity of Ramanujan’s function k(τ)=r(τ)r2(2τ)k(\tau )=r(\tau ){r}^{2}(2\tau ), where r(τ)r(\tau ) is the Rogers-Ramanujan continued fraction.
Lee Yoonjin, Park Yoon Kyung
doaj   +1 more source

Divisors in a Dedekind domain [PDF]

open access: yes, 1998
5 páginas.-- 1991 Mathematics Subject Classification: 11R04, 11A05.Peer ...
Avi Rosenfeld   +12 more
core   +1 more source

A sharp result on m-covers [PDF]

open access: yes, 2005
Let A={a_s+n_sZ}_{s=1}^k be a finite system of arithmetic sequences which forms an m-cover of Z (i.e., every integer belongs at least to m members of A). In this paper we show the following sharp result: For any positive integers m_1,...,m_k and theta in
Pan, Hao, Sun, Zhi-Wei
core   +5 more sources

Equidistribution of Elements of Norm 1 in Cyclic Extensions [PDF]

open access: yes, 2014
Upon quotienting by units, the elements of norm 1 in a number field $K$ form a countable subset of a torus of dimension $r_1 + r_2 - 1$ where $r_1$ and $r_2$ are the numbers of real and pairs of complex embeddings.
Petersen, Kathleen L.   +1 more
core   +3 more sources

An analogue in certain unique factorization domains of the Euclid‐Euler theorem on perfect numbers

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 13, Issue 1, Page 13-24, 1990., 1990
We show that there exists a natural extention of the sum of divisors function to all unique factorization domains F having a finite number of units such that if a perfect number in F is defined to be an integer η whose proper divisors sum to η, then the analogue of Euclid′s theorem giving the sufficient condition that an integer be an even perfect ...
Wayne L. McDaniel
wiley   +1 more source

On covers of abelian groups by cosets [PDF]

open access: yes, 2008
Let G be any abelian group and {a_sG_s}_{s=1}^k be a finite system of cosets of subgroups G_1,...,G_k. We show that if {a_sG_s}_{s=1}^k covers all the elements of G at least m times with the coset a_tG_t irredundant then [G:G_t]\le 2^{k-m} and ...
Lettl, Günter, Sun, Zhi-Wei
core   +3 more sources

Matrices induced by arithmetic functions acting on certain Krein spaces

open access: yesSpecial Matrices, 2017
In this paper, we study matrices induced by arithmetic functions under certain Krein-space representations induced by (multi-)primes less than or equal to fixed positive real numbers.
Cho Ilwoo
doaj   +1 more source

Matrices induced by arithmetic functions, primes and groupoid actions of directed graphs

open access: yesSpecial Matrices, 2015
In this paper, we study groupoid actions acting on arithmetic functions. In particular, we are interested in the cases where groupoids are generated by directed graphs. By defining an injective map α from the graph groupoid G of a directed graph G to the
Cho Ilwoo, Jorgensen Palle E. T.
doaj   +1 more source

$k$th power residue chains of global fields [PDF]

open access: yes, 2010
In 1974, Vegh proved that if $k$ is a prime and $m$ a positive integer, there is an $m$ term permutation chain of $k$th power residue for infinitely many primes [E.Vegh, $k$th power residue chains, J.Number Theory, 9(1977), 179-181].
Hu, Su, Li, Yan
core   +3 more sources

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

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