RT Journal Article T1 Smooth extensions of functions on separable Banach spaces A1 Azagra Rueda, Daniel A1 Fry, Robb A1 Keener, L. AB Let X be a Banach space with a separable dual X*. Let Y subset of X be a closed subspace, and f : Y -> R a C(1)-smooth function. Then we show there is a C(1) extension of f to X. PB Springer SN 0025-5831 YR 2010 FD 2010 LK https://hdl.handle.net/20.500.14352/42082 UL https://hdl.handle.net/20.500.14352/42082 LA eng NO NSERC (Canada) DS Docta Complutense RD 22 abr 2025