PageHeader : Funkcialaj Ekvacioj, 34 (1991) 449-474 Title : Existence and Regularizing Properties of Solutions Title : for the Nonstationary Convection Problem AuthorInfo : By AuthorInfo : Toshiaki HISHIDA AuthorInfo : (Waseda University, Japan) section : 1. Introduction section : 2. Preliminaries and results subsection : 2. 1. Solenoidal function spaces and operators subsection : 2.2. Abstract formulation subsection : 2.3. Main results section : 3. Some lemmas section : Lemma 3.4. Set subsection : 4.1. Fundamental estimates for $\Phi$ and $\Psi$ subsection : 4.2. Estimates for successive sequences subsection : 4.3. Local existence subsection : 4.4. Continuous dependence on initial data subsection : 4.5. Global existence section : 5. Proofs of Theorems 3 and 4 subsection : 5.1. Strong solutions of (CP) subsection : 5.2. Asymptotic behavior of solutions in Sobolev spaces subsection : 53. Asymptotic behavior of solutions in Holder spaces section : References