Studia Mathematica · 1961 · 241 citations · 0 references
Natural SciencesMathematicsDifferential EquationsBoundary-value ProblemsInitial Value ProblemsPartial Differential EquationsRegular SolutionsSystems Of Differential EquationsWeak FormulationElliptic Boundary-value ProblemsElliptic Partial Differential EquationsLinear Partial Differential EquationsLocal Existence TheoryLocal Well-posedness