Openness, closedness and duality in Banach spaces with applications to continuous linear programming.- Conditions for the closedness of the characteristic cone associated with an infinite linear system.- Symmetric duality: a prelude.- Algebraic fundamentals of linear programming.- On regular semi-infinite optimization.- Semi-infinite programming and continuum physics.- On the computation of membrane-eigenvalues by semi-infinite programming methods.- Lagrangian methods for semi-infinite programming problems.- A new primal algorithm for semi-infinite linear programming.- Extreme points and purification algorithms in general linear programming.- Network programming in continuous time with node storage.- The theorem of Gale for infinite networks and applications.- Nonlinear optimal control problems as infinite-dimensional linear programming problems.- Continuity and asymptotic behaviour of the marginal function in optimal control.- Alternative theorems for general complementarity problems.- Nonsmooth analysis and optimization for a class of nonconvex mappings.- Minimum norm problems in normed vector lattices.- Stochastic nonsmooth analysis and optimization in Banach spaces.- Titles and authors of other papers presented at the symposium.