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- W1842568589 abstract "This paper aims to give a combinatorial characterization and also construct representations of the fundamental groups of the submanifolds on flat Robertson-Walker space by using some geometrical transformations. The homotopy groups of the limit folding on flat Robertson-Walker space are presented. The homotopy groups of the retractions and deformation retract on flat Robertson-Walker space are obtained. The fundamental groups of some types of geodesics in the flat Robertson-Walker space are discussed. New types of homotopy maps are deduced. Theorems governing this connection are achieved." @default.
- W1842568589 created "2016-06-24" @default.
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- W1842568589 date "2013-04-20" @default.
- W1842568589 modified "2023-09-25" @default.
- W1842568589 title "Folding and Fundamental Groups of Flat Robertson-Walker Space" @default.
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- W1842568589 doi "https://doi.org/10.17485/ijst/2013/v6i4.1" @default.
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