Results 21 to 30 of about 142 (106)
Negation in bounded commutative $DR\ell$-monoids [PDF]
, 2006 summary:The class of commutative dually residuated lattice ordered monoids ($DR\ell $-monoids) contains among others Abelian lattice ordered groups, algebras of Hájek’s Basic fuzzy logic and Brouwerian algebras.
Rachůnek, Jiří, Slezák, Vladimír
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On a Class of Lattice Ordered Inverse Semigroups [PDF]
, 2000 It is well known that the free group on a non-empty set can be totally ordered and, further, that each compatible latttice ordering on a free group is a total ordering.
Giraldes, Emilia +2 more
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Axioms for function semigroups with agreement quasi-order [PDF]
, 2011 The agreement quasi-order on pairs of (partial) transformations on a set X is defined as follows: (f, g) ≼ (h, k) if whenever f, g are defined and agree, so do h, k.
Stokes, Tim E., Tim Stokes
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Beyond Regular Semigroups [PDF]
, 2012 The topic of this thesis is the class of weakly U-abundant semigroups. This class is very wide, containing inverse, orthodox, regular, ample, adequate, quasi-adequate, concordant, abundant, restriction, Ehresmann and weakly abundant semigroups.
Wang, Yanhui
core
The Lattice of Equational Classes of Semigroups with Zero [PDF]
, 1971 In contrast to the very complicated structure of the lattice of equational classes of commutative semigroups (see [5]), the lattice of equational classes of commutative monoids (semigroups with unit) is isomorphic with N × N* with a unit adjoined, where ...
Evelyn Nelson
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Upper set monoids and length preserving morphisms [PDF]
, 2012 International audienceLength preserving morphisms and inverse of substitutions are two well-studied operations on regular languages. Their connection with varieties generated by power monoids was established independently by Reutenauer and Straubing in ...
Cano Gómez, Antonio +4 more
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COMPLETIONS OF MONOIDS WITH APPLICATIONS TO THE CUNTZ SEMIGROUP [PDF]
, 2011 We provide an abstract categorical framework that relates the Cuntz semigroups of the C*-algebras A and [Formula: see text]. This is done through a certain completion of ordered monoids by adding suprema of countable ascending sequences.
RAMON ANTOINE +2 more
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, 2012 In this thesis we consider in detail the following two fundamental problems for semigroup presentations: 1. Given a semigroup find a presentation defining it. 2. Given a presentation describe the semigroup defined by it.
Ruškuc, Nik
core
Ordered categories and ordered semigroups [PDF]
, 2002 We use ordered categories to study semidirect decompositions of finite ordered semigroups. We obtain ordered analogues of the derived category theorem and of the delay theorem.
Arnaud Pinguet +5 more
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Restricted injectivity, transfer property and decompositions of separative positively ordered monoids [PDF]
, 1994 International audienceWe introduce a notion of separativity for positively ordered monoids (POMs), similar in definition to the notion of separativity for commutative semigroups but which has a simple categorical equivalent, weaker that injectivity, the ...
Wehrung, Friedrich
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