Hofmann, Karl; Lawson, Jimmie In memoriam: Klaus Keimel (1939–2017). (English) Zbl 1390.01079 Semigroup Forum 96, No. 2, 199-202 (2018). MSC: 01A70 × Cite Format Result Cite Review PDF Full Text: DOI
Hofmann, Karl Heinrich; Ruppert, W. A. F. Foliations induced by congruences. (English) Zbl 0663.22001 Semigroup Forum 38, No. 3, 365-369 (1989). Reviewer: J.A.Hildebrant MSC: 22A05 22E20 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Hofmann, Karl Heinrich; Ruppert, W. A. F. The foliation of semigroups by congruence classes. (English) Zbl 0671.22003 Monatsh. Math. 106, No. 3, 179-204 (1988). Reviewer: K.H.Hofmann MSC: 22E15 22A15 53C12 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Friedberg, Michael Compactifications of finite-dimensional cones. (English) Zbl 0398.22004 Semigroup Forum 15, 199-228 (1978). MSC: 22A15 20M10 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Friedberg, Michael Semirings on cones. (English) Zbl 0299.22003 Semigroup Forum 10, 329-350 (1975). MSC: 22A15 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Stralka, Albert The Green equivalences and dimension in compact monoids. II. (English) Zbl 0298.22003 Semigroup Forum 10, 8-24 (1975). MSC: 22A25 × Cite Format Result Cite Review PDF Full Text: DOI EuDML