We consider a procurement auction, where each supplier has private costs and submits a stepped supply function. We solve for a Bayesian Nash equilibrium and show that the equilibrium has a price instability in the sense that a minor change in a suppliers cost sometimes result in a major change...

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...