Browsing University of Hertfordshire by Author "Quick, Martyn"

Now showing items 1-2 of 2

    • Generating sequences of functions, 

      Mitchell, James D.; Peresse, Yann; Quick, Martyn (2006-07-18)
      We consider the problem of obtaining an arbitrary countable collection of functions with specific properties as a composition of finitely many functions with the same property. The functions investigated are continuous, ...

    • Generating transformation semigroups using endomorphisms of preorders, graphs, and tolerances 

      Mitchell, James D.; Morayne, Michal; Peresse, Yann; Quick, Martyn (2010-09-01)
      Let ΩΩ be the semigroup of all mappings of a countably infinite set Ω. If U and V are subsemigroups of ΩΩ, then we write U≈V if there exists a finite subset F of ΩΩ such that the subsemigroup generated by U and F equals ...