Ordinary and Partial Differential Equations

Riemann zeta-function.- Superposition principles and pointwise evaluation of Sturm-Liouville eigenfunction expansions.- Qualitative theory of hyperbolic characteristic initial value problems.- Applications of a comparison theorem for quasi-accretive operators in a hilbert space.- A singular sixth order differential equation with orthogonal polynomial eigenfunctions.- On the asymptotics of some volterra equations with locally finite measures and large perturbations.- Periodic oscillations of forced pendulum-like equations.- A simple layer potential method for three-dimensional eddy current problems.- Index laws for some ordinary differential operators.- Converse initial value problems for a class of heat equations.- Higher order inverse eigenvalue problems.- Indefinite Sturm-Liouville problems.- The infinitesimal generator of a stochastic functional differential equation.- On solutions to the initial-boundary problem for perturbed porous medium equation.- A survey of global properties of linear differential equations of the n-th order.- Strongly nonlinear evolution variational inequalities.- A further result on the essential spectrum of linear 2nth order differential expressions with complex coefficients.- On error bounds for nonstationary spectral Navier-Stokes approximations.- Sectorial second order differential operators.- Spectral mapping theorems for dissipative C0-semigroup generators.- Some preliminary results on periodic solutions of matrix riccati equations.- Solitary and travelling waves in a rod.- Investigations in the theory of partial differential equations of infinite order.- Well-posed boundary problems for hamiltonian systems of limit point or limit circle type.- On uniform asymptotic expansion of a class of integral transforms.- On a new numerical method for a new class of nonlinear partial differential equations arising in nonspherical geometrical optics.- Local existence theorems for ordinary differential equations of fractional order.- Application of the theorem of connectivity of M7 in astronomy.- Perturbations of periodic boundary conditions.- Bifurcation problems with triangular symmetry.- On the foundations of thermodynamics.- On some conjectures on the deficiency index for symmetric differential operators.- On a second-order differential expression and its Dirichlet integral.- An inverse eigenvalue problem for the Laplace operator.