• DML-CZ Home

Author: Numakura, Katsumi

• Numakura, Katsumi: Notes on compact rings with open radical. (English). Czechoslovak Mathematical Journal, vol. 33 (1983), issue 1, pp. 101-106
• Numakura, Katsumi: On $q$-ideals in compact semigroups. (English). Czechoslovak Mathematical Journal, vol. 28 (1978), issue 2, pp. 312-323