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Mathematics, Volume 6, Issue 3

March 2018 - 15 articles

Cover Story: We consider two similar types of spatially separated ecosystems, where one system shows chaotic dynamics, and the other shows stable dynamics. We also studies two spatially separated systems that are coupled through bi-directional migration, regulated by the population densities. Our results suggest that bi-directional migration makes the coupled system more regular. View this paper
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Articles (15)

  • Article
  • Open Access
20 Citations
7,139 Views
15 Pages

Computation of Topological Indices of Some Special Graphs

  • Mohammed Salaheldeen Abdelgader,
  • Chunxiang Wang and
  • Sarra Abdalrhman Mohammed

There are several chemical indices that have been introduced in theoretical chemistry to measure the properties of molecular topology, such as distance-based topological indices, degree-based topological indices and counting-related topological indic...

  • Feature Paper
  • Article
  • Open Access
8 Citations
4,125 Views
19 Pages

Realized volatility, building on the theory of a simple continuous time process, has recently received attention as a nonparametric ex-post estimate of the return variation. This paper addresses the problem of parameter instability due to the presenc...

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Mathematics - ISSN 2227-7390