The action of the quantum mechanical volume operator, introduced in connection with a
symmetric representation of the three-body problem and recently recognized to play a …

A great variety of data on molecular structure and changes, accumulated both
experimentally and theoretically, need be compacted and classified to extract the …

The six volumes LNCS 11619-11624 constitute the refereed proceedings of the 19th
International Conference on Computational Science and Its Applications, ICCSA 2019, held …

This paper treats 6 j symbols or their orthonormal forms as a function of two variables
spanning a square manifold which we call the “screen”. We show that this approach gives …

This article presents and discusses in detail the results of extensive exact calculations of the
most basic ingredients of spin networks, the Racah coefficients (or Wigner 6 j symbols) …

The Wigner 3 j symbols of the quantum angular momentum theory are related to the vector
coupling or Clebsch-Gordan coefficients and to the Hahn and dual Hahn polynomials of the …

A unified vision of the symmetric coupling of angular momenta and of the quantum
mechanical volume operator is illustrated. The focus is on the quantum mechanical angular …

This paper continues previous work on quantum mechanical angular momentum theory and
its applications. Relationships with projective geometry provide insight on various areas of …

Large sets of data need to be compacted for classification and extraction of information
regarding structural changes of aminoacid units in specific sequences of proteins. The …

Eigenvalues and eigenfunctions of the volume operator, associated with the symmetric
coupling of three SU (2) angular momentum operators, can be analyzed on the basis of a …