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math.AP2009
A quasi-commutativity property of the Poisson and composition operators
Alberto Cialdea, Vladimir Maz'ya
Let be a real valued function of one real variable, let denote an elliptic second order formally self-adjoint differential operator with bounded measurable coefficients, an…
math.AP2006
Criteria for the -dissipativity of systems of second order differential equations
Alberto Cialdea, Vladimir Maz'ya
We give complete algebraic characterizations of the -dissipativity of the Dirichlet problem for some systems of partial differential operators of the form $\partial_{h}({\ma…
math.AP2004★ 4 cited
Criterion for the -dissipativity of second order differential operators with complex coefficients
Alberto Cialdea, Vladimir Maz'ya
We prove that the algebraic condition (for any ) is necessary and su…