1. Categorical (binary) difference terms and protomodularity

   • Dominique Bourn
   • Zurab Janelidze

   OriginalPaper 29 September 2011 Article: 277

2. On canonicity of poset expansions

   • Tomoyuki Suzuki

   OriginalPaper 29 September 2011 Article: 243

3. Natural extensions and profinite completions of algebras

   • B. A. Davey
   • M. J. Gouveia
   • H. A. Priestley

   OriginalPaper 27 September 2011 Article: 205