Estimates for the parametrix of the Kohn Laplacian on certain domains.
On the regularity properties of non-linear wave equations
On the algebraic properties of the spaces
We investigate the multiplicative properties of the spaces As in the case of the classical Sobolev spaces this space does not form an algebra. We investigate instead the space , more precisely a subspace of it formed by products of solutions of the homogeneous wave equation with data in .
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