2018/08/19 by Walter D. Neumann, Walter D Neumann, Neumann, Walter D
Decision Sciences · Mathematics · #03C05 #08AXX #Advanced Topics in Algebra #Category Theory (math.CT) #FOS: Mathematics #Fuzzy and Soft Set Theory #Homotopy and Cohomology in Algebraic Topology #Logic (math.LO) #Rings and Algebras (math.RA) #math.CT #math.LO #math.RA #msc:03C05 #msc:08AXX
paper · pdf · doi:10.48550/arxiv.1808.06242
arxiv created 2018/08/19 · openalex publication_date 2018/08/19 · arxiv updated 2018/08/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper was accepted for Comment. Math. Univ. Carolinae in 1968 but then got lost during the military occupation of Prague and surrounding events. My own long-lost carbon copy of it turned up in my Columbia office. The only changes to the text are addition of a footnote and some commas.