which is a linear combination of n-electron configurations, or determinants, with coefficients equal to c!. The components |Φ! form an orthonormal basis of the wavefunction. The determinants are the set of features that comprise the wavefunction, so we can optimize them by minimizing the electronic energy. To determine the energy of the wavefunction c, the Schrödinger equation in matrix form reads

‎three infinite families of finite abelian groups will be‎ ‎described such that each member of these families has‎ ‎the r'edei $k$-property for many non-trivial values of $k$‎.

We consider a noncommutative version of the bispectral problem proposed originally by Grünbaum. The latter had number unexpected connections with soliton theory and special functions interest in Mathematical Physics. take an algebraic route to describe symmetry structure algebras operators using notion full rank one algebra. By this concept, we provide general framework derive method verify if ...