Results 11 to 20 of about 1,128,575 (267)

On the quadratic residues and their distribution properties

open access: yesOpen Mathematics, 2023
The main purpose of this article is to use elementary methods and properties of classical Gauss sums to determine identities for the number of residue systems of aa mod pp such that aa, a+a¯a+\bar{a}, and a−a¯a-\bar{a} are all quadratic residues ...
Liu Xiaoge, Meng Yuanyuan
doaj   +1 more source

On the number of decomposable trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
A tree is called $k$-decomposable if it has a spanning forest whose components are all of size $k$. Analogously, a tree is called $T$-decomposable for a fixed tree $T$ if it has a spanning forest whose components are all isomorphic to $T$. In this paper,
Stephan G. Wagner
doaj   +1 more source

Perturbed Keplerian Hamiltonian Systems

open access: yesInternational Journal of Differential Equations, 2023
This paper deals with a class of perturbation planar Keplerian Hamiltonian systems, by exploiting the nondegeneracy properties of the circular solutions of the planar Keplerian Hamiltonian systems, and by applying the implicit function theorem, we show ...
Riadh Chteoui
doaj   +1 more source

Modular Construction of Topological Interlocking Blocks—An Algebraic Approach for Resource-Efficient Carbon-Reinforced Concrete Structures

open access: yesBuildings, 2023
An algebraic approach to the design of resource-efficient carbon-reinforced concrete structures is presented. Interdisciplinary research in the fields of mathematics and algebra on the one hand and civil engineering and concrete structures on the other ...
Sascha Stüttgen   +5 more
doaj   +1 more source

Impulse Propagation in Compositions and Words

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2021
We consider compositions of n represented as bargraphs and subject these to repeated impulses which start from the left at the top level and destroy horizontally connected parts.
Margaret Archibald   +4 more
doaj   +1 more source

Position of the maximum in a sequence with geometric distribution [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
As a sequel to [arch04], the position of the maximum in a geometrically distributed sample is investigated. Samples of length n are considered, where the maximum is required to be in the first d positions.
Margaret Archibald
doaj   +1 more source

The extended equivalence and equation solvability problems for groups [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
special issue in honor of Laci Babai's 60th birthday: Combinatorics, Groups, Algorithms, and ...
Gabor Horvath, Csaba Szabo
doaj   +1 more source

A Page in Number Theory

open access: yesJ. Formaliz. Reason., 2008
We discuss the formalization, in the Matita Interactive Theorem Prover, of a few elementary results in number theory about the Moebius mu function and the Euler phi function.
ASPERTI, ANDREA, C. Armentano
openaire   +3 more sources

Utility-Numbers Theory [PDF]

open access: yesIEEE Access, 2019
Fuzzy theory defined by Zadeh has been developed through both analytical and computational categories of diverse sciences in light of time. The goal of applying fuzzy theory is to incorporate uncertainties with conventional deterministic calculations to enhance the reliability of results. Since fuzzy theory has been developed and carried out by so many
Peide Liu   +4 more
openaire   +2 more sources

New family of special numbers associated with finite operator [PDF]

open access: yesMathematica Moravica, 2020
Using the notion of the generating function of a function, we define an operator with whom we manage to build a large family of numbers and polynomials. This technique permits to give the closed formulae and interesting combinatorial identities.
Goubi Mouloud
doaj   +1 more source

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