2 papers
math.OA2003
Norm closure of classical pseudodifferential operators does not contain Hörmander's class
Severino T. Melo
The L2-norm closure of the algebra of all zero-order classical (or polyhomogeneous) pseudodifferential operators on a closed manifold is proven not to contain Hörmander's class…
math.OA2001
C*-Structure and K-Theory of Boutet de Monvel's Algebra
S. T. Melo, R. Nest, E. Schrohe
We consider the norm closure of the algebra of all operators of order and class zero in Boutet de Monvel's calculus on a manifold with boundary . We first describe the i…