Research and Analysis Journal <p>The RA Journals International Journals of Multidisciplinary Research, international peer-reviewed open access journal which publishes research articles, review articles short communications and book reviews from academicians and business-persons, our aims publish articles of high quality dealing with issues which impact national and global scientific research scholars. The RA Journals is an international peer-reviewed and multidisciplinary journal that provides a venue for scholars to publish their research findings for advocacy and utilization&nbsp;<br>RAJ publishes original research papers and review papers, as well as auxiliary material such as research papers, case studies, technical reports etc.</p> en-US Research and Analysis Journal 2589-921X Mathematical Study of a Class of Reaction-Di┬žusion System <p>In this work, we define a diffusion reaction system resulting from the modeling of certain chemical reactions coming from quantitative or formal chemical kinetics [1]. The key amount is that of the reaction rate. The objective of this work is to prove the local, global existence, uniqueness and positivity for these reaction-diffusion systems.</p> <p>CCS Concepts The ACM Computing Classification Scheme :65C, 65N, 65M.</p> <p>&nbsp;</p> saida bakht Copyright (c) 2020 Research and Analysis Journal 2020-01-08 2020-01-08 No. 154 159