MacLane, Saunders Natural associativity and commutativity. (English) Zbl 0244.18008 Rice Univ. Stud. 49, No. 4, 28-46 (1963). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 12 ReviewsCited in 137 Documents MSC: 18D99 Categorical structures 18D10 Monoidal, symmetric monoidal and braided categories (MSC2010) PDF BibTeX XML Cite \textit{S. MacLane}, Rice Univ. Stud. 49, No. 4, 28--46 (1963; Zbl 0244.18008) OpenURL