Results 21 to 30 of about 165,979,158 (232)

On Generation of the Groups $SL_n(\mathbb{Z}+i\mathbb{Z})$ and $PSL_n(\mathbb{Z}+i\mathbb{Z})$ by Three Involutions, Two of Which Commute

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2022
M. C. Tamburini and P. Zucca proved that the special linear group of dimension greater than 13 over the ring of Gaussian integers is generated by three involutions, two of which commute (J. of Algebra, 1997).
R. I. Gvozdev   +2 more
doaj   +1 more source

An Updated List of Species Used in Tree-Ring Research

open access: yes, 1993
During the past 100 years, researchers have investigated the potential of hundreds of tree and shrub species for use in applications of tree-ring research.
Grissino-Mayer, Henri D.
core   +4 more sources

Approximatting rings of integers in number fields [PDF]

open access: yesJournal de théorie des nombres de Bordeaux, 1994
In this paper we study the algorithmic problem of finding the ring of integers of a given algebraic number field. In practice, this problem is often considered to be well-solved, but theoretical results indicate that it is intractable for number fields that are defined by equations with very large coefficients.
Lenstra, H.W., Buchmann, J.A.
openaire   +2 more sources

Combinatorial integers (m,nj) and Schubert calculus in the integral cohomology ring of infinite smooth flag manifolds

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We discuss the calculation of integral cohomology ring of LG/T and ΩG. First we describe the root system and Weyl group of LG, then we give some homotopy equivalences on the loop groups and homogeneous spaces, and calculate the cohomology ring structures
Cenap Özel, Erol Yilmaz
doaj   +1 more source

Chinese remainder theorem secret sharing in multivariate polynomials

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2019
This paper deals with a generalization of the secret sharing using Chinese remainder theorem over the integers to multivariate polynomials over a finite field. We work with the ideals and their Gröbner bases instead of integer moduli.
Gennadii V. Matveev
doaj   +1 more source

Algebraic relations among Goss’s zeta values on elliptic curves

open access: yesForum of Mathematics, Sigma, 2023
In 2007 Chang and Yu determined all the algebraic relations among Goss’s zeta values for $A=\mathbb F_q[\theta ]$ , also known as the Carlitz zeta values.
Nathan Green, Tuan Ngo Dac
doaj   +1 more source

Rings of Multisets and Integer Multinumbers [PDF]

open access: yesMathematics, 2022
In the paper, we consider a ring structure on the Cartesian product of two sets of integer multisets. In this way, we introduce a ring of integer multinumbers as a quotient of the Cartesian product with respect to a natural equivalence. We examine the properties of this ring and construct some isomorphisms to subrings of polynomials and Dirichlet ...
Yuriy Chopyuk   +2 more
openaire   +2 more sources

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

The Diophantine equation ax2+2bxy−4ay2=±1

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We discuss, with the aid of arithmetical properties of the ring of the Gaussian integers, the solvability of the Diophantine equation ax2+2bxy−4ay2=±1, where a and b are nonnegative integers.
Lionel Bapoungué
doaj   +1 more source

Cube-root-subgroups of SL2 over imaginary quadratic integers [PDF]

open access: yesComputer Science Journal of Moldova, 2021
All cube roots of the identity in the special linear group of $2\times 2$-matrices with entries in the ring of integers in $\mathbb Q[\sqrt{d}]$ are described.
Miroslav Kures
doaj  

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