RT Journal Article T1 Approximation methods by regular functions A1 Llavona, José G. AB This paper is a survey of approximation results and methods by smooth functions in Banach spaces. The topics considered in the paper are the following: approximation by polynomials by C-k-functions using the method of smooth partitions of unity, approximation by the fine topology, analytic approximation and regularization in Banach spaces using the infimal convolution method. PB Springer Verlag SN 1660-5446 YR 2006 FD 2006 LK https://hdl.handle.net/20.500.14352/50053 UL https://hdl.handle.net/20.500.14352/50053 LA eng DS Docta Complutense RD 6 abr 2025