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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…
math.AP2004★ 1 cited
Form boundedness of the general second order differential operator
V. G. Maz'ya, I. E. Verbitsky
We give explicit necessary and sufficient conditions for the boundedness of the general second order differential operator L with real- or complex-valued distributional coefficient…