訂正日: 2006/10/20訂正理由: -訂正箇所: 引用文献情報訂正内容: Wrong : 1) I. Juhász, Cardinal functions in topology-ten years later, Math. Centrum, Amsterdam, 1980. 2) R. Engelking, General Topology, Polish Scientific Publishers, Warszawa, 1977. 3) Liu Xiao-Shi, Two kinds of cardinal function of topological spaces and improvements of some famous cardinal inequalities, Acta Math. Sinica, 29-4 (1986), 494-497. 4) B. Šapirovskii, On discrete subspaces of topological spaces. Weight, tightness and the souslin number, English transl.: Soviet Math. Dokl., 13 (1972), 215-219.
Right : [1] I. Juhász, Cardinal functions in topology-ten years later, Math. Centrum, Amsterdam, 1980. [2] R. Engelking, General Topology, Polish Scientific Publishers, Warszawa, 1977. [3] Liu Xiao-Shi, Two kinds of cardinal function of topological spaces and improvements of some famous cardinal inequalities, Acta Math. Sinica, 29-4 (1986), 494-497. [4] B. Šapirovskii, On discrete subspaces of topological spaces. Weight, tightness and the souslin number, English transl.: Soviet Math. Dokl., 13 (1972), 215-219.