SEARCH Articles Figures Tables Application of First Principles Density Functional Theory (DFT) to Polymers Applying the principles of probability theory to a linear inverse problem Basic principles of density functional theory General Principles of Optimal Control Theory General principles of band theory General principles of quantum theory Principle and Theory of Electrophoresis Principles of Biorthogonal Valence Bond Theory Principles of Molecular Orbital Theory Principles of Perturbation Theory Principles of Transition State Theory Principles of quantum theory The Basic Principles of Density Functional Theory Variation Principle and Chemical Potential of TF Theory