A note on geometric characterization of Fréchet differentiability
Commentationes Mathematicae Universitatis Carolinae, Tome 17 (1976) no. 1, pp. 195-204
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Classification : 46G05, 47H99, 58C20
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Daneš, Josef; Durdil, Jiří. A note on geometric characterization of Fréchet differentiability. Commentationes Mathematicae Universitatis Carolinae, Tome 17 (1976) no. 1, pp. 195-204. http://geodesic.mathdoc.fr/item/CMUC_1976_17_1_a15/

[1] J. DURDIL: On the geometric characterization of differentiability I. Comment. Math. Univ. Carolinae 15 (1974), 521-540. | MR | Zbl

[2] E. L. ROETMAN: Tangent planes and differentiation. Math. Mag. 43 (1970), 1-7. | MR | Zbl

[3] K. YOSIDA: Functional Analysis. Springer-Verlag, 1965. | Zbl