The note concerns the partial derivative problem on product domains in C-2. We show that there exists a bounded solution operator from C-k,C- alpha into itself, k is an element of Z(+) boolean OR{0}, 0 < alpha < 1. The regularity result is optimal in view of an example of Stein-Kerzman.
机构:
Ecole Polytech, Ctr Math Laurent Schwartz, UMR 7640, F-91128 Palaiseau, FranceEcole Polytech, Ctr Math Laurent Schwartz, UMR 7640, F-91128 Palaiseau, France