Results 21 to 30 of about 1,064 (264)

A Note on Congruences of Infinite Bounded Involution Lattices

open access: yesScientific Annals of Computer Science, 2021
We prove that an infinite (bounded) involution lattice and even pseudo-Kleene algebra can have any number of congruences between 2 and its number of elements or equalling its number of subsets, regardless of whether it has as many ideals as elements or ...
Claudia Muresan
doaj   +1 more source

Congruences and subdirect representations of graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2020
A basic tool in universal algebra is that of a congruence. It has been shown that congruences can be defined  for graphs with properties similar to their universal algebraic counterparts.
Stefan Veldsman
doaj   +1 more source

S-Acts with Finitely Generated Universal Congruence [PDF]

open access: yesMathematics Interdisciplinary Research, 2022
Universal left congruences on semigroups were studied in “Y. Dandan, V. Gould, T. Quinn-Gregson and R. Zenab, Semigroups with finitely generated universal left congruence, Monat. Math. 190 (2019) 689−724”.
Ali Asghar Gholipour   +3 more
doaj   +1 more source

An investigation on hyper S-posets over ordered semihypergroups

open access: yesOpen Mathematics, 2017
In this paper, we define and study the hyper S-posets over an ordered semihypergroup in detail. We introduce the hyper version of a pseudoorder in a hyper S-poset, and give some related properties.
Tang Jian, Davvaz Bijan, Xie Xiang-Yun
doaj   +1 more source

Arithmetic properties of Ramanujan's general partition function for modulo 11

open access: yesKuwait Journal of Science, 2020
In the present work, for the general partition function $p_k(n)$, we establish five new infinite families of congruences. Our emphasis throughout this paper is to exhibit the use of $q$-identities  to generate congruences for the general partition ...
Srivatsa Kumar Belakavadi Radhakrishna   +2 more
doaj   +1 more source

Congruences of curves [PDF]

open access: yesTransactions of the American Mathematical Society, 1903
where u and v denote the parameters determining the curves and t is the parameter which determines the points on the curve. By this method of definition the equations of a congruence of curves are given a form similar to that usually adopted in the discussions of rectilinear congruences, so that one proceeds naturally to a generalization of some of the
openaire   +1 more source

On Fuzzy Congruences and Fuzzy Strong h-Ideals of Hemirings

open access: yesThe Scientific World Journal, 2014
The aim of this paper is to introduce the concepts of fuzzy strong h-ideals and fuzzy congruences of hemirings. The quotient hemirings via fuzzy strong h-ideals are investigated.
Kuanyun Zhu, Jianming Zhan, Yunqiang Yin
doaj   +1 more source

Ramanujan-type congruences modulo 4 for partitions into distinct parts

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
In this paper, we consider the partition function Q(n) counting the partitions of n into distinct parts and investigate congruence identities of the form Q(p⋅n+p2-124)≡0   (mod4),Q\left( {p \cdot n + {{{p^2} - 1} \over {24}}} \right) \equiv 0\,\,\,\left(
Merca Mircea
doaj   +1 more source

A Study on Groupoids, Ideals and Congruences via Cubic Sets

open access: yesAxioms, 2022
The inclusion, the intersection and the union between cubic sets are each defined in two ways. From this point of view, we introduce the concepts of cubic subgroupoids, cubic ideals, cubic subgroups, and cubic congruences as two types, respectively, and ...
Jeong-Gon Lee   +4 more
doaj   +1 more source

Some congruences related to harmonic numbers and the terms of the second order sequences [PDF]

open access: yesMathematica Moravica, 2016
In this paper, with helps of some combinatorial identities, we investigate various basic congruences involving harmonic numbers and terms of the second order sequences {Ukn} and {Vkn}.
Omur Nese, Koparal Sibel
doaj  

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