Results 191 to 200 of about 20,804 (234)
Higher prevalence of pulmonary tuberculosis revealed by Xpert MTB/RIF ultra among drug users in Kinshasa, Democratic Republic of Congo. [PDF]
BMC Infect DisNkisi GB +5 more
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Several supplementary concepts for applied category-theoretical states over an extended Petri net using an example relating to genetic coding: Toward an abstract algebraic formulation of molecular/genetic biology. [PDF]
PLoS OneSawamura J, Morishita S, Ishigooka J.
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International Journal of Algebra and Computation, 2009
We show that the free weakly E-ample monoid on a set X is a full submonoid of the free inverse monoid FIM(X) on X. Consequently, it is ample, and so coincides with both the free weakly ample and the free ample monoid FAM(X) on X. We introduce the notion of a semidirect product Y*T of a monoid T acting doubly on a semilattice Y with identity.
Fountain, John +2 more
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We show that the free weakly E-ample monoid on a set X is a full submonoid of the free inverse monoid FIM(X) on X. Consequently, it is ample, and so coincides with both the free weakly ample and the free ample monoid FAM(X) on X. We introduce the notion of a semidirect product Y*T of a monoid T acting doubly on a semilattice Y with identity.
Fountain, John +2 more
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FREE INVERSE MONOIDS AND GRAPH IMMERSIONS
International Journal of Algebra and Computation, 1993The relationship between covering spaces of graphs and subgroups of the free group leads to a rapid proof of the Nielsen-Schreier subgroup theorem. We show here that a similar relationship holds between immersions of graphs and closed inverse submonoids of free inverse monoids.
Margolis, Stuart W., Meakin, John C.
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STRONGLY TORSION FREE ACTS OVER MONOIDS
Asian-European Journal of Mathematics, 2013An act ASis called torsion free if for any a, b ∈ ASand for any right cancellable element c ∈ S the equality ac = bc implies a = b. In [M. Satyanarayana, Quasi- and weakly-injective S-system, Math. Nachr.71 (1976) 183–190], torsion freeness is considered in a much stronger sense which we call in this paper strong torsion freeness and will characterize ...
Zare, Abas +2 more
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