1. Relation algebras as expanded FL-algebras

   • Nikolaos Galatos
   • Peter Jipsen

   OriginalPaper 27 December 2012 Pages: 1 - 21

2. Multi-algebras as tolerance quotients of algebras

   • G. Grätzer
   • R. Quackenbush

   OriginalPaper 25 December 2012 Pages: 23 - 26

3. k-metric spaces

   • H. Pajoohesh

   OriginalPaper 25 December 2012 Pages: 27 - 43

4. Hull determination and type decomposition for a generalized effect algebra

   • David J. Foulis
   • Sylvia Pulmannová

   OriginalPaper 25 December 2012 Pages: 45 - 81

5. Independent joins of tolerance factorable varieties

   • Ivan Chajda
   • Gábor Czédli
   • Radomír Halaš

   OriginalPaper 27 December 2012 Pages: 83 - 92

6. Almost f-maps and almost f-rings

   • Mohamed Amine Ben Amor
   • Karim Boulabiar

   OriginalPaper 25 December 2012 Pages: 93 - 99