This publication contains the English translation of two papers (I, II) of a research worker of the Computing Centre of RAS G.L. Stavraki.
These works develop a model of space-time proposed in the book “Model of Space-Time as a Field Noncommutative Causal Structure” (Moscow: URSS, 2009) and contain the conclusion of specific consequences of this model.
In the article II the author together with S.N. Ganebnykh construct new algorithms for the decompositions of representions of groups. By using these algorithms from the original fermion multiplet the subgroup multiplet with quantum numbers of observed fermions is selected.