RT Journal Article T1 Renormings of L-p(L-q) A1 Deville, Robert A1 Gonzalo, R. A1 Jaramillo Aguado, Jesús Ángel AB We investigate the best order of smoothness of L-p(L-q). We prove in particular that there exists a C-infinity-smooth bump function on L-p(L-q) if and only if p and q are even integers and p is a multiple of q. PB Cambridge Univ Press SN 0305-0041 YR 1999 FD 1999-01 LK https://hdl.handle.net/20.500.14352/57600 UL https://hdl.handle.net/20.500.14352/57600 DS Docta Complutense RD 15 dic 2025