Pure Mathematics: Recent submissions

Now showing items 66-70 of 90

    • Endomorphisms of Fraïssé limits and automorphism groups of algebraically closed relational structures 

      McPhee, Jillian Dawn (University of St Andrews, 2012-11-30) - Thesis
      Let Ω be the Fraïssé limit of a class of relational structures. We seek to answer the following semigroup theoretic question about Ω. What are the group H-classes, i.e. the maximal subgroups, of End(Ω)? Fraïssé limits for ...

    • On disjoint unions of finitely many copies of the free monogenic semigroup 

      Abughazalah, Nabilah; Ruskuc, Nik (2013-08) - Journal article
      Every semigroup which is a finite disjoint union of copies of the free monogenic semigroup (natural numbers under addition) is finitely presented and residually finite.

    • Topics in combinatorial semigroup theory 

      Maltcev, Victor (University of St Andrews, 2012-11-30) - Thesis
      In this thesis we discuss various topics from Combinatorial Semigroup Theory: automaton semigroups; finiteness conditions and their preservation under certain semigroup theoretic notions of index; Markov semigroups; ...

    • Presentations and efficiency of semigroups 

      Ayik, Hayrullah (University of St Andrews, 1998) - Thesis
      In this thesis we consider in detail the following two problems for semigroups: (i) When are semigroups finitely generated and presented? (ii) Which families of semigroups can be efficiently presented? We also consider ...

    • Semigroups of order-decreasing transformations 

      Umar, Abdullahi (University of St Andrews, 1992) - Thesis
      Let X be a totally ordered set and consider the semigroups of orderdecreasing (increasing) full (partial, partial one-to-one) transformations of X. In this Thesis the study of order-increasing full (partial, partial ...