Results 51 to 60 of about 18,787 (208)
, 2014 An (additive) functor F from an additive category A to an additive category B is said to be objective, provided any morphism f in A with F(f) = 0 factors through an object K with F(K) = 0.
Ringel, Claus Michael, Zhang, Pu
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Hewitt-Marczewski-Pondiczery type theorem for abelian groups and Markov's potential density
, 2009 For an uncountable cardinal \tau and a subset S of an abelian group G, the following conditions are equivalent: (i) |{ns:s\in S}|\ge \tau for all integers n\ge 1; (ii) there exists a group homomorphism \pi:G\to T^{2^\tau} such that \pi(S) is dense in T ...
Dikranjan, Dikran, Shakhmatov, Dmitri
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Memorias do Instituto Oswaldo Cruz, 2002 Triatoma rubrovaria has become the most frequently captured triatomine species since the control of T. infestans in the State of Rio Grande do Sul (RS), Brazil.
Carlos Eduardo Almeida +3 more
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Acta Botânica Brasílica, 2013 Distyly is a genetically controlled floral dimorphism, characterized by the reciprocal positioning of pin and thrum morphs, a heteromorphic incompatibility system and a balanced morph ratio (isoplethy).
Ebenezer Barbosa Rodrigues +1 more
doaj
Vaught's conjecture for monomorphic theories [PDF]
Annals of Pure and Applied Logic, 2019 A complete first order theory of a relational signature is called monomorphic iff all its models are monomorphic (i.e. have all the $n$-element substructures isomorphic, for each positive integer $n$). We show that a complete theory ${\mathcal T}$ having infinite models is monomorphic iff it has a countable monomorphic model and confirm the Vaught ...
openaire +3 more sources
Posner's second theorem with two variable σ-derivations
Journal of Taibah University for Science, 2017 This study is an attempt to prove the following result: Suppose that R is a 2-torsion free prime ring and Φ:R×R→R is a left two variable σ-derivation such that σ is a monomorphism, Φ(R×R)⊆σ(R), and [σ(b) − b, x] = 0 for all b∈I and x∈R, where I is an ...
Amin Hosseini
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Multilocus VNTR analysis of Mycobacterium ulcerans strains isolated in Côte d’Ivoire
Journal of Infection in Developing Countries, 2010 Introduction: Buruli ulcer, caused by Mycobacterium ulcerans, is endemic in more than 30 countries worldwide, with Côte d'Ivoire being among the most affected countries.
Grossmann Marie-David Coulibaly-N´Golo +8 more
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Indian Journal of Animal SciencesPersistency can be explained as number of days during which the high level of milk production is maintained after the peak milk yield. The aim of this study was to identify genetic variants of bovine-Growth Hormone (bGH), Growth Hormone Receptor (GHR ...
LINDA GEORGE +4 more
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An embedding theorem for adhesive categories
, 2011 Adhesive categories are categories which have pushouts with one leg a monomorphism, all pullbacks, and certain exactness conditions relating these pushouts and pullbacks. We give a new proof of the fact that every topos is adhesive.
Lack, Stephen
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Foldings and monomorphisms [PDF]
Proceedings of the Edinburgh Mathematical Society, 1996 In this paper we generalize the folding process initiated by Stallings for graphs to a class of generalized covering spaces. These spaces are called pinched coverings or pinched cores, depending on the particular situation. We then apply our generalized folding process to manipulate these spaces into actual coverings.
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