On tightness and Suslin number in exp X and in a product of spaces. (English. Russian original) Zbl 0257.54004
Sov. Math., Dokl. 13, 496-499 (1972); translation from Dokl. Akad. Nauk SSSR 203, 1001-1003 (1972).
MSC:
54A25 | Cardinality properties (cardinal functions and inequalities, discrete subsets) |
54B10 | Product spaces in general topology |