Results 21 to 30 of about 63 (57)
On central relations of complete lattices [PDF]
, 1987 summary:We characterize lattices with a complemented tolerance lattice. As an application of our results we give a characterization of bounded weakly atomic modular lattices with a Boolean tolerance ...
Zelinka, Bohdan +9 more
core +1 more source
Diamond identities for relative congruences [PDF]
, 1995 summary:For a class $K$ of structures and $A\in K$ let ${Con}^*(A)$ resp. ${Con}^{K}(A)$ denote the lattices of $*$-congruences resp. $K$-congruences of $A$, cf. Weaver [25].
Czédli, Gábor
core
$\Sigma$-Hamiltonian and $\Sigma$-regular algebraic structures
, 1996 summary:The concept of a $\SS$-closed subset was introduced in [1] for an algebraic structure $\A=(A,F,R)$ of type $\t$ and a set $\SS$ of open formulas of the first order language $L(\t)$.
Emanovský, Petr, Chajda, Ivan
core +1 more source
On congruences of $G$-sets [PDF]
, 1997 summary:We describe $G$-sets whose congruences satisfy some natural lattice or multiplicative restrictions. In particular, we determine $G$-sets with distributive, arguesian, modular, upper or lower semimodular congruence lattice as well as congruence $n$
Vernikov, B. M.
core
Compatible idempotent terms in universal algebra
, 2014 In universal algebra, we oftentimes encounter varieties that are not especially well-behaved from any point of view, but are such that all their members have a well-behaved core, i.e. subalgebras or quotients with satisfactory properties.
Chajda I +2 more
core
Commutators in semigroups [PDF]
Комутатор двије конгруенције на произвољној алгебри дефинисан преко термовног услова је уведен и изучаван у [11] и [28]. Уопштење овог појма на комутатор произвољног броја конгруенција је дао Булатов у [5].
Радовић, Јелена
core +2 more sources
A study on 0-distributive nearlattice
, 2014 This thesis is submitted to the Department of Mathematics, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mathematics, November 2014.Cataloged from PDF Version of Thesis ...
Rahman, Md. Zaidur
core
Congruence distributivity and modularity permit tolerances [PDF]
, 2002 Horváth, Eszter K., Czédli, Gábor
core