Abstract:
We obtain a sufficiently general variational formula for a Green's function, which, in particular, implies the classic variational formulas of Hadamard and Schiffer.
Citation:
S. P. Suetin, “An analogue of the Hadamard and Schiffer variational formulas”, TMF, 170:3 (2012), 335–341; Theoret. and Math. Phys., 170:3 (2012), 274–279