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Lokale Berührungskegel einer Menge im euklidischen Raum $$E_n$$. (German) Zbl 0386.52003

##### MSC:
 52A20 Convex sets in $$n$$ dimensions (including convex hypersurfaces) 53A05 Surfaces in Euclidean and related spaces
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##### References:
 [1] Nožička F.: Über einfache Mannigfaltigkeiten in linearen affinnen Raum $$A_n$$ in globalen Auffassung. Czech Mathematical Journal. 1976. [2] Abadie J.: Nonlinear Programming. North Holland Publishing Company. 1967. · Zbl 0153.30601 [3] Bazaraa M. S., Goode J. J., Nashed M. Z.: On the Cone of Tangents with Applications to Mathematical Programming. 1973. · Zbl 0259.90037
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