Crossed complexes, and free crossed resolutions for amalgamated sums and HNN-extensions of groups.
Georgian Mathematical Journal, Tome 9 (2002) no. 4, pp. 623-644.

Voir la notice de l'article provenant de la source European Digital Mathematics Library

Keywords: crossed complex, homotopy pushouts
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     title = {Crossed complexes, and free crossed resolutions for amalgamated sums and {HNN-extensions} of groups.},
     journal = {Georgian Mathematical Journal},
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Brown, R.; Moore, E.J.; Porter, T.; Wensley, C.D. Crossed complexes, and free crossed resolutions for amalgamated sums and HNN-extensions of groups.. Georgian Mathematical Journal, Tome 9 (2002) no. 4, pp. 623-644. http://geodesic.mathdoc.fr/item/GMJ_2002__9_4_50551/