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Author

A. Al-Rdade

Department of Mathematics, Faculty of Science, Tanta University, Tanta, Egypt
1 article in our journals

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Research ArticleOpen accessDeformation Retracts of the Reissner-Nordstrom Spacetime and its FoldingsA. E. El-Ahmady, A. Al-RdadeOur aim in the present article is to introduce and study the relation between the deformation retract of the Reissner-Nordstrom spacetime N4 and the deformation retract of the tangent space Tp (N4). Also, this relation discussed after and before the isometric and topological folding of N4 into itself. New types of conditional folding are presented. Some commutative diagrams are obtained. …American Journal of Applied Sciences, Vol. 10, Issue 7 · 2 Jul 2013 · 6,443 accessesView PDFCite