%0 Journal Article
%T On functional bases of the first-order differential invariants for non-conjugate subgroups of the Poincar¨¦ group $P(1,4)$
%A V.M. Fedorchuk
%A V.I. Fedorchuk
%J Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
%D 2008
%I Krak¨®w : Wydawnictwo Naukowe Uniwersytetu Pedagogicznego
%X It is established which functional bases of the first-order differential invariants of the splitting and non-splitting subgroups of the Poincar¨¦ group $P(1,4)$ are invariant under the subgroups of the extended Galilei group $widetilde G(1,3) subset P(1,4)$. The obtained sets of functional bases are classified according to dimensions.
%U http://studmath.up.krakow.pl/index.php/studmath/article/view/75