Richman, Fred; Walker, Elbert A. Ext in pre-Abelian categories. (English) Zbl 0354.18018 Pac. J. Math. 71, 521-535 (1977). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 ReviewsCited in 29 Documents MSC: 18G15 Ext and Tor, generalizations, Künneth formula (category-theoretic aspects) 18E05 Preadditive, additive categories PDFBibTeX XMLCite \textit{F. Richman} and \textit{E. A. Walker}, Pac. J. Math. 71, 521--535 (1977; Zbl 0354.18018) Full Text: DOI