Adnan Atef Hajj, "A variational principle for complex boundary value problems", International Journal of Mathematics and Mathematical Sciences, vol. 11, Article ID 351571, 4 pages, 1988. https://doi.org/10.1155/S0161171288000377
A variational principle for complex boundary value problems
This paper provides a variational formalism for boundary value problems which arise in certain feilds of research such as that of electricity, where the associated boundary conditions contain complex periodic conditions. A functional is provided which embodies the boundary conditions of the problem and hence the expansion (trial) functions need not satisfy any of them.
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