NESTERENKO, M. and S. POŠTA. Differential Invariants and Realizations of the Deformed Smallest Galilei Algebra. Physics of Particles and Nuclei. 2018, 49(5), 949-951. ISSN 1063-7796. DOI 10.1134/S1063779618050301.
Deformations of the smallest Galilei algebra are constructed and deformed algebras are realized by Lie vector fields. For these realization bases of differential invariants and operators of invariant differentiation are constructed in the case of two dependent and one independent variables.