The Milgram non-operad
Annales de l'Institut Fourier, Tome 49 (1999) no. 5, pp. 1427-1438.

C. Berger affirme avoir construit une structure de E n -opérade sur les permutoèdres de Milgram, dont la monade associée est exactement le modèle de Milgram pour les espaces libres de lacets itérés. Dans ce travail je montre que cet énoncé n’est pas correct.

C. Berger claimed to have constructed an E n -operad-structure on the permutohedras, whose associated monad is exactly the Milgram model for the free loop spaces. In this paper I will show that this statement is not correct.

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Brinkmeier, Michael. The Milgram non-operad. Annales de l'Institut Fourier, Tome 49 (1999) no. 5, pp. 1427-1438. doi : 10.5802/aif.1724. http://www.numdam.org/articles/10.5802/aif.1724/

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