. . . . . . . . . . . "Differential operators on riemannian manifolds"@en . . . . . . . . . . . . . . . . "KANSAS UNIV LAWRENCE Dept. of MATHEMATICS." . . "Mathematics Research." . . "Differential geometry." . . "Algebraic topology." . . "Mapping(transformations)" . . "Theoretical Mathematics." . . "Complex variables)" . . "Differential equations, Partial." . . "Boundary value problems." . . "Riemann surfaces." . . "Differential equations." . . "(Operators(mathematics)" . . "Tensor analysis." . .