rss_2.0Sciendo RSS Feed for International Journal of Mathematics and Computer in Engineeringhttps://sciendo.com/journal/IJMCEhttps://www.sciendo.comhttps://sciendo-parsed-data-feed.s3.eu-central-1.amazonaws.com/642410be5772a531b04e566d/cover-image.pnghttps://sciendo.com/journal/IJMCE140216https://sciendo.com/article/10.2478/ijmce-2023-0002<abstract> <title style='display:none'>Abstract</title> <p>In this research, the extended rational sinh-cosh method and the modified extended tanh-function method for mathematically constructing traveling wave solutions to the (2+1)-dimensional integro-differential Konopelchenko-Dubrovsky evolution equation are successfully employed to obtain specific appropriate solutions for the first time. A traveling wave transformation was utilized to turn the provided model into a third-order nonlinear ordinary differential equation. Solitary and periodic wave solutions for the model under investigation are obtained in terms of various complex hyperbolic trigonometric and rational functions. Several of the aforementioned solutions have been represented by two- and three-dimensional graphics with appropriate arbitrary parameters to highlight their physical implications. Two-dimensional graphs have presented the influence of time evolution on the solution’s structures.</p> </abstract>ARTICLEtruehttps://sciendo.com/article/10.2478/ijmce-2023-00022023-05-23T00:00:00.000+00:00https://sciendo.com/article/10.2478/ijmce-2023-0001<abstract> <title style='display:none'>Abstract</title> <p>In theoretical chemistry, fuzzy molecular graphs can be used to model chemical molecular structures with uncertainty information, where the vertex membership function and edge membership function describe the uncertainty of atoms and chemical bonds respectively. This paper studies chemical topological index of bipolar cubic fuzzy graphs. The new concepts and theorems are given in terms of graph theory and fuzzy set theory approaches, and several theoretical conclusions on bipolar Wiener index of bipolar cubic fuzzy graphs are determined. Furthermore, we apply it in chemical science, and calculate the bipolar Wiener index of dimethyltryptamine and hallucinogen which are modelled by bipolar cubic fuzzy graphs.</p> </abstract>ARTICLEtruehttps://sciendo.com/article/10.2478/ijmce-2023-00012023-03-28T00:00:00.000+00:00en-us-1