SEARCH Articles Figures Tables Avoiding Variational Collapse The Minimax Principle Beyond the variational principle S-matrix version of the Hulthen-Kohn-variational principle Summary of the atomic variation principle The Hulthen-Kohn variational principle The Second Hohenberg-Kohn Theorem Variational Principle The variation principle Variation principle Variation principle in the Dirac theory Variational Principles and the Cutoff Problem Variational principle Variational principles for the Schrodinger equation