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zbMath0542.54005MaRDI QIDQ3330083

Nguyen van Vinh

Publication date: 1983

Full work available at URL: https://eudml.org/doc/17252

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

character density topological invariants tightness weight pseudocharacter finite cyclic group net-weight \(\pi\)-weight

Mathematics Subject Classification ID

Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25) Product spaces in general topology (54B10) Representation of semigroups; actions of semigroups on sets (20M30) Topological representations of algebraic systems (54H10)

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