Results 11 to 20 of about 10,139 (118)
The Structure of a Graph Inverse Semigroup [PDF]
, 2015 Given any directed graph E one can construct a graph inverse semigroup G(E), where, roughly speaking, elements correspond to paths in the graph. In this paper we study the semigroup-theoretic structure of G(E).
Mesyan, Zachary, Mitchell, J. D.
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Profinite Groups Associated to Sofic Shifts are Free [PDF]
, 2009 We show that the maximal subgroup of the free profinite semigroup associated by Almeida to an irreducible sofic shift is a free profinite group, generalizing an earlier result of the second author for the case of the full shift (whose corresponding ...
Costa, Alfredo, Steinberg, Benjamin
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Cross-connections and variants of the full transformation semigroup [PDF]
, 2017 Cross-connection theory propounded by K. S. S. Nambooripad describes the ideal structure of a regular semigroup using the categories of principal left (right) ideals.
Muhammed, P. A. Azeef
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On Congruence Lattices of Nilsemigroups [PDF]
, 2016 We prove that the congruence lattice of a nilsemigroup is modular if and only if the width of the semigroup, as a poset, is at most two, and distributive if and only if its width is one. In the latter case, such semigroups therefore coincide with the nil
Jones, Peter, Popovich, Alexander L.
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A note on primes of the form a2 + 1 [PDF]
, 2007 In this note I prove using an algebraic identity and Wilson's ...
Gonzalez, Juan Lopez
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Amenability and geometry of semigroups [PDF]
, 2017 We study the connection between amenability, Følner conditions and the geometry of finitely generated semigroups. Using results of Klawe, we show that within an extremely broad class of semigroups (encompassing all groups, left cancellative semigroups ...
Gray, Robert, Kambites, Mark
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, 2014 We examine languages of unranked forests definable using the temporal operators EF and EX. We characterize the languages definable in this logic, and various fragments thereof, using the syntactic forest algebras introduced by Bojanczyk and Walukiewicz ...
H Straubing +3 more
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The primitive spectrum of a semigroup of Markov operators
, 2019 For a semigroup S of Markov operators on a space of continuous functions, we use S-invariant ideals to describe qualitative properties of S such as mean ergodicity and the structure of its fixed space.
Kreidler, Henrik
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Quantum Subdivision Capacities and Continuous-time Quantum Coding
, 2015 Quantum memories can be regarded as quantum channels that transmit information through time without moving it through space. Aiming at a reliable storage of information we may thus not only encode at the beginning and decode at the end, but also ...
Müller-Hermes, Alexander +2 more
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Semigroup Closures of Finite Rank Symmetric Inverse Semigroups
, 2008 We introduce the notion of semigroup with a tight ideal series and investigate their closures in semitopological semigroups, particularly inverse semigroups with continuous inversion.
A. Abd-Allah +35 more
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