A relation between the type numbers of a
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Rothe, Erich H.
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Article
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1950
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John Wiley and Sons
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English
⚖ 965 KB
ROTHE of Ann Arbor, Mich. (USA.). (Eingegangen am 6. 3. 1950.) \*) For any point set U the closure is denoted by F. The symbol n denotea intersection -The symbol (y 1 P(y)} denotes the set of all y having the property P . Sometimes we will shortly write {PI, e.g., {I SO) = (ylZ(y) 5 0 ) .