scientific article

zbMath0526.04005MaRDI QIDQ3041200

Wojciech Żakowski

Publication date: 1982

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

zbMATH Keywords

rough setapproximation spaceapproximate operationsapproximate equalityapproximate inclusionapproximation of a set

Mathematics Subject Classification ID

Other classical set theory (including functions, relations, and set algebra) (03E20)

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