Mathematics – Functional Analysis
Scientific paper
2012-03-16
Mathematics
Functional Analysis
48 pages
Scientific paper
Given a compact manifold (N^n), (k \in \mathbb{N}_*) and (1 \le p < \infty), we prove that the class (C^\infty(\bar{Q}^m; N^n)) of smooth maps on the cube with values into (N^n) is dense with respect to the strong topology in the Sobolev space (W^{k, p}(Q^m; N^n)) if the homotopy group (\pi_{\lfloor kp \rfloor}(N^n)) of order (\lfloor kp \rfloor) is trivial. We also prove the density of maps that are smooth except for a set of dimension (m - \lfloor kp \rfloor - 1) without any restriction on the homotopy group of (N^n).
Bousquet Pierre
Ponce Augusto
Schaftingen Jean Van
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