## Collectionwise normality and the extension of functions on product spaces.(English)Zbl 0245.54009

### MSC:

 54C45 $$C$$- and $$C^*$$-embedding 54C20 Extension of maps 54D60 Realcompactness and realcompactification 46E99 Linear function spaces and their duals 54D15 Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.)
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