Results 11 to 20 of about 1,290 (174)

Predicative theories of continuous lattices [PDF]

open access: yesLogical Methods in Computer Science, 2021
We introduce a notion of strong proximity join-semilattice, a predicative notion of continuous lattice which arises as the Karoubi envelop of the category of algebraic lattices. Strong proximity join-semilattices can be characterised by the coalgebras of
Tatsuji Kawai
doaj   +1 more source

On general n-ary hyperstructure semilattices [PDF]

open access: yesJournal of Hyperstructures, 2016
In this paper, the n-ary hyperstructure will be applied to some aspects of lattice theory. We introduce the concepts of general n-ary hyperstructure semilattice ( or gnh-semilattice) and Gnh-subsemilattice, ideal of gnh-semilattice, gno-order, Gnoorder ...
Akbar Dehghan Nezhad, Najmeh Khajuee
doaj   +1 more source

Congruence on a strong semilattice of π-groups

open access: yes上海师范大学学报. 自然科学版, 2022
It is well known that a semigroup is a Clifford semigroup, if and only if it is a strong semilattice of groups, and the class of π-groups is the generalization of groups in the range of π-regular semigroups.
DAI Luyao, ZHANG Jiangang, SHEN Ran
doaj   +1 more source

Monotone and cone preserving mappings on posets [PDF]

open access: yesMathematica Bohemica, 2023
We define several sorts of mappings on a poset like monotone, strictly monotone, upper cone preserving and variants of these. Our aim is to study in which posets some of these mappings coincide.
Ivan Chajda, Helmut Länger
doaj   +1 more source

On strategy-proofness and semilattice single-peakedness [PDF]

open access: yes, 2019
Altres ajuts: UNSL/319502We study social choice rules defined on the domain of semilattice singlepeaked preferences. Semilattice single-peakedness has been identified as the necessary condition that a set of preferences must satisfy so that the set can ...
Institut d'Anàlisi Econòmica   +3 more
core   +7 more sources

Hilbert algebras as implicative partial semilattices [PDF]

open access: yesOpen Mathematics, 2007
summary:Let $A := (A,\rightarrow ,1)$ be a Hilbert algebra. The monoid of all unary operations on $A$ generated by operations $\alpha _p\colon x \mapsto (p \rightarrow x)$, which is actually an upper semilattice w.r.t.
Cīrulis Jānis
doaj   +2 more sources

A Semigroup Is Finite Iff It Is Chain-Finite and Antichain-Finite

open access: yesAxioms, 2021
A subset A of a semigroup S is called a chain (antichain) if ab∈{a,b} (ab∉{a,b}) for any (distinct) elements a,b∈A. A semigroup S is called periodic if for every element x∈S there exists n∈N such that xn is an idempotent.
Iryna Banakh   +2 more
doaj   +1 more source

Flat semilattices [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
Let S (respectively S
Bulman-Fleming, Sydney   +1 more
openaire   +2 more sources

Relational Theory of Risk and Its Applications to Game Theory Problems of Non-Numerical Economics

open access: yesСтатистика и экономика, 2021
The purpose of the work is to study the foundations of a general risk theory. To form a single formal concept of risk, a number of definitions of the term “risk” found in the literature have been analyzed.
T. A. Urazaeva
doaj   +1 more source

Finite Atomized Semilattices

open access: yesCoRR, 2021
We show that every finite semilattice can be represented as an atomized semilattice, an algebraic structure with additional elements (atoms) that extend the semilattice's partial order. Each atom maps to one subdirectly irreducible component, and the set of atoms forms a hypergraph that fully defines the semilattice. An atomization always exists and is
Fernando Martin-Maroto   +1 more
openaire   +2 more sources

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