1. Some steps on short bridges: non-metrizable surfaces and CW-complexes

   • Mathieu Baillif

   OriginalPaper 06 March 2012 Pages: 153 - 164

2. Gerstenhaber–Schack diagram cohomology from the operadic point of view

   • Martin Doubek

   OriginalPaper 13 March 2012 Pages: 165 - 206

3. A model categorical approach to group completion of E _n -algebras

   • Manfred Stelzer

   OriginalPaper 29 March 2012 Pages: 207 - 221

4. Graph homology and graph configuration spaces

   • Vladimir Baranovsky
   • Radmila Sazdanovic

   OriginalPaper 24 April 2012 Pages: 223 - 235

5. A note on the composition product of symmetric sequences

   • Michael Ching

   OriginalPaper 21 April 2012 Pages: 237 - 254

6. Surgery on a pair of transversal manifolds

   • A. Bak
   • Y. V. Muranov

   OriginalPaper 30 May 2012 Pages: 255 - 279

7. Some collapsing operations for 2-dimensional precubical sets

   • Thomas Kahl

   OriginalPaper 05 June 2012 Pages: 281 - 298