RT Journal Article T1 Weierstrass' theorem in weighted Sobolev spaces with k derivatives: announcement of results A1 Portilla, Ana A1 Quintana, Yamilet A1 Rodríguez, José M. A1 Tourís, Eva AB We characterize the set of functions which can be approximated by smooth functions and by polynomials with the norm $$ \ \ {W k,\infty}_w}=\sum_ {j=0} \ (j)}\ {L \infty}_{w_j}}, $$ for a wide range of (possibly unbounded) vector weights $w=(w_j's)$. We allow a great deal of independence among the weights $w=(w_j's)$. PB Kent State University YR 2006 FD 2006 LK https://hdl.handle.net/10016/6453 UL https://hdl.handle.net/10016/6453 LA eng NO 5 pages, no figures.-- MSC2000 codes: 41A10, 46E35, 46G10. NO MR#: MR2219919 (2006m:41012) NO Zbl#: Zbl 1107.41007 NO Research partially supported by a grant from DGI(BFM 2003-04870), Spain. Ana Portilla and José M. Rodríguez are also partially supported by agrant from DGI(BFM 2003-06335-C03-02), Spain. DS e-Archivo RD 23 may. 2024