Geodesic
Arc operads and arc algebras
Kaufmann, Ralph M1 ; Livernet, Muriel2 ; Penner, R C3
1 Oklahoma State University, Stillwater, USA, Max Planck Institut für Mathematik, Bonn, Germany
2 Université Paris 13, France
3 University of Southern California, Los Angeles, USA
Geometry & topology, Tome 7 (2003) no. 1, pp. 511-568.

Voir la notice de l'article provenant de la source Mathematical Sciences Publishers

Several topological and homological operads based on families of projectively weighted arcs in bounded surfaces are introduced and studied. The spaces underlying the basic operad are identified with open subsets of a combinatorial compactification due to Penner of a space closely related to Riemann’s moduli space. Algebras over these operads are shown to be Batalin–Vilkovisky algebras, where the entire BV structure is realized simplicially. Furthermore, our basic operad contains the cacti operad up to homotopy. New operad structures on the circle are classified and combined with the basic operad to produce geometrically natural extensions of the algebraic structure of BV algebras, which are also computed.

DOI : 10.2140/gt.2003.7.511
Keywords: moduli of Surfaces, operads, Batalin–Vilkovisky algebras

Kaufmann, Ralph M 1 ; Livernet, Muriel 2 ; Penner, R C 3

1 Oklahoma State University, Stillwater, USA, Max Planck Institut für Mathematik, Bonn, Germany
2 Université Paris 13, France
3 University of Southern California, Los Angeles, USA 
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Kaufmann, Ralph M; Livernet, Muriel; Penner, R C. Arc operads and arc algebras. Geometry & topology, Tome 7 (2003) no. 1, pp. 511-568. doi : 10.2140/gt.2003.7.511. http://geodesic.mathdoc.fr/articles/10.2140/gt.2003.7.511/

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