Approximating from shift-invariant subspaces in the Sobolev space \(W_2^m(\mathbb{R}^d)\). (Chinese) Zbl 0954.41010
The authors give a necessary and sufficient condition for the simultaneous approximation from shift-invariant subspaces in the Sobolev space.
Reviewer: Hang Tong Lau (St.Laurent/Quebec)
MSC:
| 41A20 | Approximation by rational functions |
