Results 101 to 110 of about 4,202,174 (239)

A note on intersections of free submonoids of a free monoid

open access: yesSemigroup Forum, 1984
Let S be a finite alphabet. The free monoid generated by S is denoted by \(S^*\). Let \(X=\{x,y\}\) for some \(x,y\in S^*\). X is periodic if \(X\subseteq p^*\) for some \(p\in S^*\). The main result of the paper says: Let \(X=\{x,y\}\) and \(U=\{u,v\}\) be nonperiodic subsets of \(S^*\).
openaire   +4 more sources

On Algebras of Distributions of Binary Formulas for Theories of Unars

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2016
Algebras of distributions of binary isolating and semi-isolating formulas are derived structures for a given theory. These algebras reflect binary links between realizations of 1-types defined by formulas of the initial theory.
D. Emelyanov
doaj  

Checking Contact Tracing App Implementations with Bespoke Static Analysis. [PDF]

open access: yesSN Comput Sci, 2022
Flood R, Chan SC, Chen W, Aspinall D.
europepmc   +1 more source

On some combinatorial problems in free monoids

open access: yesDiscrete Mathematics, 1982
AbstractRearrangements of words in a free monoid A∗ are considered and related to some equations in A∗. The solutions of special equations are given and some consequences are derived.
openaire   +4 more sources

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