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Fundamental solutions of the differential operator \((-1)^ n D^ n_ 1D^ n_ 2+a(iD_ 1)^ n+b(iD^ 2)^ n+c\). (English) Zbl 0458.35014

MSC:

35E05 Fundamental solutions to PDEs and systems of PDEs with constant coefficients
35D05 Existence of generalized solutions of PDE (MSC2000)
35A08 Fundamental solutions to PDEs