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On co-groups in the category of graded algebras. (English) Zbl 0134.42404


Keywords:

topology
Full Text: DOI

References:

[1] R. Bott and H. Samelson, On the Pontryagin product in spaces of paths, Comment. Math. Helv. 27 (1953), 320 – 337 (1954). · Zbl 0052.19301 · doi:10.1007/BF02564566
[2] B. Eckmann and P. J. Hilton, Group-like structures in general categories. I, Math. Ann. 145 (1962), 227-255; II, ibid. 151 (1963), 150-186; III, ibid. 150 (1963), 165-187. · Zbl 0099.02101
[3] B. Eckmann and P. J. Hilton, Structure maps in group theory, Fund. Math. 50 (1961/1962), 207 – 221. · Zbl 0104.01703
[4] Daniel M. Kan, On monoids and their dual, Bol. Soc. Mat. Mexicana (2) 3 (1958), 52 – 61. · Zbl 0128.24801
[5] Daniel M. Kan, A combinatorial definition of homotopy groups, Ann. of Math. (2) 67 (1958), 282 – 312. · Zbl 0091.36901 · doi:10.2307/1970006
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