A multivitamin is a preparation intended to be a dietary supplement with vitamins, dietary minerals, and other nutritional elements.Such preparations are available in the form of tablets, capsules, pastilles, powders, liquids, and injectable formulations. multivitamin is a preparation intended to be a dietary supplement with vitamins, dietary minerals, and other nutritional elements.
Hence the name density functional theory comes from the use of functionals of the electron density. DFT is among the most popular and versatile methods available in condensed-matter physics, computational physics, and computational chemistry.n general, density functional theory finds increasingly broad application in the chemical and material sciences for the interpretation and prediction of complex system behavior at an atomic scale.
Our most basic approximation does just this. It is called the Born-Oppenheimer approximation. A functional is a function of a function. In DFT the functional is the electron density which is a function of space and time.The electron density is used in DFT as the fundamental property unlike Hartree-Fock theory which deals directly with the many-body wavefunction.n this case the total ground state energy of a many-electron system is a functional of the density. So, if we know the electron density functional, we know the total energy of our system. By focusing on the electron density it is possible to derive an effective one-electron-type Schroedinger schrÃ¶dinger. equation