Results 21 to 30 of about 3,718,653 (287)

A hierarchy of maximal intersecting triple systems [PDF]

open access: yesOpuscula Mathematica, 2017
We reach beyond the celebrated theorems of Erdȍs-Ko-Rado and Hilton-Milner, and a recent theorem of Han-Kohayakawa, and determine all maximal intersecting triples systems.
Joanna Polcyn, Andrzej Ruciński
doaj   +1 more source

Equivalence of K-functionals and modulus of smoothness generated by a Dunkl type operator on the interval $(-1, 1)$

open access: yesComptes Rendus. Mathématique, 2023
Our aim in this paper is to show that the modulus of smoothness and the $K$-functionals constructed from the Sobolev-type space corresponding to the Dunkl operator are equivalent on the interval $(-1,1)$.
Saadi, Faouaz, Daher, Radouan
doaj   +1 more source

On the residual solvability of generalized free products of solvable groups [PDF]

open access: yes, 2011
In this paper, we study the residual solvability of the generalized free product of solvable groups.Comment: Discrete Mathematics & Theoretical Computer Science, Vol 13 ...
Kahrobaei, Delaram, Majewicz, Stephen
core   +2 more sources

Secret-Sharing Matroids need not be Algebraic [PDF]

open access: yes, 2014
We combine some known results and techniques with new ones to show that there exists a non-algebraic, multi-linear matroid. This answers an open question by Matus (Discrete Mathematics 1999), and an open question by Pendavingh and van Zwam (Advances in ...
Ben-Efraim, Aner
core   +1 more source

Dimension Theory of Graphs and Networks [PDF]

open access: yes, 1997
Starting from the working hypothesis that both physics and the corresponding mathematics have to be described by means of discrete concepts on the Planck-scale, one of the many problems one has to face in this enterprise is to find the discrete ...
Ashtekar A   +12 more
core   +2 more sources

On Generalized Jacobsthal and Jacobsthal–Lucas Numbers

open access: yesAnnales Mathematicae Silesianae, 2022
Jacobsthal numbers and Jacobsthal–Lucas numbers are some of the most studied special integer sequences related to the Fibonacci numbers. In this study, we introduce one parameter generalizations of Jacobsthal numbers and Jacobsthal–Lucas numbers.
Bród Dorota, Michalski Adrian
doaj   +1 more source

Pregeometric Concepts on Graphs and Cellular Networks as Possible Models of Space-Time at the Planck-Scale [PDF]

open access: yes, 1998
Starting from the working hypothesis that both physics and the corresponding mathematics have to be described by means of discrete concepts on the Planck-scale, one of the many problems one has to face is to find the discrete protoforms of the building ...
Balachandran   +14 more
core   +2 more sources

Some Thoughts on the Teaching of Mathematics -- ten years later [PDF]

open access: yes, 2014
I describe some deep-seated problems in higher mathematical education, and give some ideas for their solution -- I advocate a move away from the traditional introduction of mathematics through calculus, and towards computation and discrete mathematics ...
Rivin, Igor
core   +1 more source

A further analysis of Cuckoo Hashing with a Stash and Random Graphs of Excess r [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2010
Analysis of ...
Reinhard Kutzelnigg
doaj   +1 more source

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