Domain perturbations, Brownian motion, capacities, and ground states of Dirichlet Schrödinger operators.
Diffusion processes and second order elliptic operators with singular coefficients for lower order terms.
On the existence of positive solutions of semilinear elliptic equations with Dirichlet boundary conditions.
Sturdy frames of type (2,2) algebras and their applications to semirings
We introduce sturdy frames of type (2,2) algebras, which are a common generalization of sturdy semilattices of semigroups and of distributive lattices of rings in the theory of semirings. By using sturdy frames, we are able to characterize some semirings. In particular, some results on semirings recently obtained by Bandelt, Petrich and Ghosh can be extended and generalized.
An initial and boundary value problem for nonlinear composite type systems of three equations.
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