Results 81 to 90 of about 167 (147)

Perfect semilattices

Semigroup Forum, 1985
We characterize the semilattices S which satisfy the condition (i) \(\forall \theta \in Con(S)\), \(x\theta a_ 1a_ 2\Rightarrow \exists x_ 1,x_ 2\in S:\) \(x_ 1\theta a_ 1\), \(x_ 2\theta a_ 2\) and \(x_ 1x_ 2=x\). Then we characterize the implicative semilattices S which satisfy not only (i) but also the condition (ii) \(\forall \theta \in Con(S)\), \(
Varlet, J., Hansoul, G.
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Implication in finite posets with pseudocomplemented sections. [PDF]

Soft comput, 2022
Chajda I, Länger H.
europepmc   +1 more source

A Study of Ordered Ag-Groupoids in terms of Semilattices via Smallest (Fuzzy) Ideals

Advances in Fuzzy Systems, 2018
An ordered AG-groupoid can be referred to as an ordered left almost semigroup, as the main difference between an ordered semigroup and an ordered AG-groupoid is the switching of an associative law.
Venus Amjid, Faisal Yousafzai, Kostaq Hila   +2 more
doaj   +1 more source

Transitivity and homogeneity of orthosets and inner-product spaces over subfields of R. [PDF]

Geom Dedic, 2022
Vetterlein T.
europepmc   +1 more source

K-Theory for Semigroup C*-Algebras and Partial Crossed Products. [PDF]

Commun Math Phys, 2022
Li X.
europepmc   +1 more source

Mapping research topics at multiple levels of detail. [PDF]

Patterns (N Y), 2021
Lafia S, Kuhn W, Caylor K, Hemphill L.
europepmc   +1 more source

Hypercontact semilattices

Journal of Applied Non-Classical Logics
Contact Boolean algebras are one of the main algebraic tools in region-based theory of space. T. Ivanova provided strong motivations for the study of merely semilattices with a contact relation. Another significant motivation for considering an even weaker underlying structure comes from event structures with binary conflict in the theory of concurrent
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Orthomodular semilattices

Discrete Mathematics, 2007
Quantum structures are usually bounded posets, but attempts were made to introduce also generalizations having only the lower bound,~\(0\). Then the orthocomplement is replaced by the relative complement, \(x^a\), of \(x\) in the interval \([0,a]\).
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Measures on semilattices [PDF]

Pacific Journal of Mathematics, 1971
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