A Complementarity Partition Theorem for Multifold Conic Systems

Consider a homogeneous multifold convex conic system $Ax = 0, \; x\in K_1\times...\times K_r$ and its alternative system $$ A\transp y \in K_1^*\times...\times K_r^*, $$ where $K_1,..., K_r$ are regular closed convex cones. We show that there is canonical partition of the index set ${1,...,r}$ determined by certain complementarity sets associated to the most interior solutions to the two systems. Our results are inspired by and extend the Goldman-Tucker Theorem for linear programming.

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