ПросмотрЕстественные и точные науки по теме "Lie point symmetries"
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Model of the Newtonian cosmology: Symmetries, invariant and partialy invariant solutions / I. Klebanova,c, , O. Startsuna, S. Ivanovb
(2015-06-05)Symmetry group of the equation system of ideal nonrelativistic self-gravitating fluid with zero pressure is calculated. Submodel invariant under the sub-group of rotations SO(3) is built and symmetry group of the factorsystem ...