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Corrigendum to "Products of pseudoradial spaces".

Obersnel, Franco; Tironi, Gino — 1995

Mathematica Pannonica

Products of pseudoradial spaces.

Obersnel, Franco; Tironi, Gino — 1995

Mathematica Pannonica

Open maps do not preserve Whyburn property

Franco Obersnel — 2003

Commentationes Mathematicae Universitatis Carolinae

We show that a (weakly) Whyburn space $X$ may be mapped continuously via an open map $f$ onto a non (weakly) Whyburn space $Y$ . This fact may happen even between topological groups $X$ and $Y$ , $f$ a homomorphism, $X$ Whyburn and $Y$ not even weakly Whyburn.

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