E_n-operads in differential graded algebra

The University of Copenhagen

November 17-21, 2008

Organizers: Alexander Berglund, Bruno Vallette, and Nathalie Wahl

External Participants:

  • John Harper (EPFL)
  • Pascal Lambrechts (Louvain)
  • Joan Millès (Nice) 
  • Théophile Naïto (EPFL)
  • Paolo Salvatore (Rome II)
  • Henrik Strohmayer (Stockholm)
  • Bruno Vallette (Nice) 

    Programme (Notes of the talks are linked to the titles)

     Mon   10:00-12:00 (Vallette) 
     Topology seminar (Brendle + Beliakova)
     Tue  10:00-12:00 (Harper)
     14:00-16:00 (Berglund)
     E-infinity algebras and p-adic homotopy theory (Mandell)
     Combinatorial operad actions on cochains (Berger-Fresse)
     Wed  10:00-12:00 (Lambrechts)
     14:00-16:00 (Salvatore)
     Cosimplicial Objects and little n-cubes . I (McClure-Smith)
     Multivariable cochain operations and little n-cubes (McClure-Smith)
     Thu  10:00-12:00 (Wahl)
     14:00-16:00 (Millès)
     Formality of the little N-discs operad (Lambrechts-Volić)
     The lattice path operad (Batanin-Berger)
     Fri  10:00-12:00 (Vallette)
     13:00-15:00 (Strohmayer)
     The bar complex of an E-infinity algebra (Fresse)
     Iterated bar complexes of E-infinity algebras (Fresse)


    Location: All talks are in room 04.4.01.




  • M. Batanin, C. Berger, "The lattice path operad".
  •  C. Berger, B. Fresse, " Combinatorial operad actions on cochains,"http://arxiv.org/abs/math/0109158
  • B. Fresse, "The bar complex of an E-infinity algebra" http://arxiv.org/abs/math/0601085
  • B. Fresse, "Iterated bar complexes of E-infinity algebras and homology theories". 
  • P. Lambrechts. I. Volić, "Formality of the little N-discs operad," http://arxiv.org/abs/0808.0457
  • M. Mandell, "E-infinity algebras and p-adic homotopy theory," Topology 40 (2001), no. 1, 43--94.
  •  J. McClure, J. Smith, "Cosimplicial Objects and little n-cubes. I", Amer. J. Math. 126 (2004), no. 5, 1109--1153.
  • J. McClure, J. Smith, "Multivariable cochain operations and little n-cubes", http://arxiv.org/abs/math/0106024