
AbstractNew identities for elliptic partial differential equations are obtained. Several applications are discussed. In particular, Young's law for the contact angles in triple junction formation is proven rigorously. Structure of level curves of saddle solutions to Allen–Cahn equation are also carefully analyzed.
Symmetry, Hamiltonian identity, Saddle solutions, Level set, Contact angle, Analysis, Elliptic partial differential equations and systems, Phase transition
Symmetry, Hamiltonian identity, Saddle solutions, Level set, Contact angle, Analysis, Elliptic partial differential equations and systems, Phase transition
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