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Remarks on sequence-convering closed maps

Tuyen L. Q.

Fasciculi Mathematici

2014

Nr 53

161--165

In this paper, we prove that each sequence-covering closed map on spaces with point-countable weak bases is 1-sequence-covering (or weak-open).

Another approach to dimension of maps

Krzempek J.

Bulletin of the Polish Academy of Sciences. Mathematics

2002

Vol. 50, no 2

141-154

Two equivalent definitions of the Cech-Lebesgue dimension are extended to closed (continuous) maps. This leads to two different dimension-like functions: the covering dimension and partition dimension of maps. A few characterizations of at most n-dimensional maps (for both dimensions) are proved as well as countable and locally finite sum theorems.