Results 91 to 100 of about 20,555 (206)

UNDECIDABILITY AND THE DEVELOPABILITY OF PERMUTOIDS AND RIGID PSEUDOGROUPS

Forum of Mathematics, Sigma, 2017
A permutoid is a set of partial permutations that contains the identity and is such that partial compositions, when defined, have at most one extension in the set.
MARTIN R. BRIDSON, HENRY WILTON
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Idempotent 2x2 matrices over linearly ordered abelian groups [PDF]

Categories and General Algebraic Structures with Applications
In this paper we study multiplicative semigroups of $2\times 2$ matrices over a linearly ordered abelian group with an externally added bottom element. The multiplication of such a semigroup is defined by replacing addition and multiplication by join and
Valdis Laan, Marilyn Kutti
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Regularity and Green's Relations on a Semigroup of Transformations with Restricted Range

International Journal of Mathematics and Mathematical Sciences, 2008
Let T(X) be the full transformation semigroup on the set X and let T(X,Y)={α∈T(X):Xα⊆Y}. Then T(X,Y) is a sub-semigroup of T(X) determined by a nonempty subset Y of X.
Jintana Sanwong, Worachead Sommanee
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K-Theory for Semigroup C*-Algebras and Partial Crossed Products. [PDF]

Commun Math Phys, 2022
Li X.
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SEMILATTICE OF BISIMPLE INVERSE SEMIGROUPS

The Quarterly Journal of Mathematics, 1971
The purpose of this paper is to give a structure for a semigroup which is a semilattice of bisimple inverse semigroups and satisfies certain conditions. For such a semigroup, we characterize the idempotent separating congruences.
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Ordered Left Almost ⋇-Semihypergroups Based on Fuzzy Sets

Journal of Mathematics
The concept of an involution or anti-involution is a self-inverse linear mapping that plays a prominent role in the theory of algebraic structures, particularly rings, hyperrings, ordered semigroups, and ordered semihypergroups.
Nabilah Abughazalah, Naveed Yaqoob
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Semigroup models for biochemical reaction networks. [PDF]

J Math Biol, 2023
Loutchko D.
europepmc   +1 more source

Curvature-Dimension Conditions for Symmetric Quantum Markov Semigroups. [PDF]

Ann Henri Poincare, 2023
Wirth M, Zhang H.
europepmc   +1 more source

Ergodic decompositions of Dirichlet forms under order isomorphisms. [PDF]

J Evol Equ, 2023
Schiavo LD, Wirth M.
europepmc   +1 more source

Introduction to Inverse Semigroups

This is an account of the theory of inverse semigroups, assuming only that the reader knows the basics of semigroup theory.
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