Now showing items 11-12 of 12

    • Finite groups are big as semigroups 

      Dolinka, Igor; Ruskuc, Nik (2011-09) - Journal article
      We prove that a finite group G occurs as a maximal proper subsemigroup of an infinite semigroup (in the terminology of Freese, Ježek, and Nation, G is a big semigroup) if and only if |G| ≥ 3. In fact, any finite semigroup ...
    • A first survey of the global population size and distribution of the Scottish Crossbill Loxia scotica 

      Summers, Ron W; Buckland, Stephen Terrence (2011-06) - Journal article
      A survey of Scottish Crossbills Loxia scotica was carried out in 3,506 km2 of conifer woodland in northern Scotland during January to April 2008 to provide the first estimate of the global population size for this endemic ...