Author: Shum, K. P.

Zhao, Jianrong; Hong, Shaofang; Liao, Qunying; Shum, K. P.: On the divisibility of power LCM matrices by power GCD matrices. (English). Czechoslovak Mathematical Journal, vol. 57 (2007), issue 1, pp. 115-125
Shum, K. P.; Ren, X. M.: On super hamiltonian semigroups. (English). Czechoslovak Mathematical Journal, vol. 54 (2004), issue 1, pp. 247-252
Nochefranca, L.; Shum, K. P.: Pseudo-symmetric ideals of semigroup and their radicals. (English). Czechoslovak Mathematical Journal, vol. 48 (1998), issue 4, pp. 727-735
Lai, C. K.; Shum, K. P.: A note in inverse and dual semigroups. (English). Czechoslovak Mathematical Journal, vol. 42 (1992), issue 1, pp. 7-10

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