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ISSN: 1546-9239 (Print)
ISSN: 1554-3641 (Online)
Research Article Open Access

Deformation Retracts of the Reissner-Nordstrom Spacetime and its Foldings

A. E. El-Ahmady1 and A. Al-Rdade2
  • 1 Department of Mathematics, Faculty of Science, Taibah University, Madinah, Saudi Arabia
  • 2 Department of Mathematics, Faculty of Science, Tanta University, Tanta, Egypt

Abstract

Our 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
Volume 10 No. 7, 2013, 740-745

DOI: https://doi.org/10.3844/ajassp.2013.740.745

Submitted On: 16 September 2012 Published On: 2 July 2013

How to Cite: El-Ahmady, A. E. & Al-Rdade, A. (2013). Deformation Retracts of the Reissner-Nordstrom Spacetime and its Foldings. American Journal of Applied Sciences, 10(7), 740-745. https://doi.org/10.3844/ajassp.2013.740.745

Open AccessCopyright: © 2013 A. E. El-Ahmady and A. Al-Rdade. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Keywords

  • Retraction
  • Deformation Retracts
  • Folding
  • Reissner-Nordstrom Spacetime