Abstract. Some characterizations of Sobolev spaces are discussed.
AMS Subject Classification
(1991): 42B10, 42B35
Keyword(s):
Schrödinger equation,
initial value problems,
oscillatory integrals,
maximal estimates,
Sobolev spaces
Received September 2, 2008, and in revised form December 16, 2008. (Registered under 6071/2009.)
|