TY - JOUR T1 - WIENER AND HARARY INDICES OF MYCIELSKIAN GRAPHS AU - Mittal, Tanya AU - Goyal, Shanu PY - 2025 DA - November Y2 - 2025 JF - TWMS Journal of Applied and Engineering Mathematics JO - JAEM PB - Işık University Press WT - DergiPark SN - 2146-1147 SP - 2687 EP - 2696 VL - 15 IS - 11 LA - en AB - Let $G = (V(G), E(G))$ be a graph, where $V= \{v_{1}, v_{2}, \ldots v_{n} \}$. Let $V' = \{ v'_{1}, v'_{2}, \ldots, v'_{n} \}$ be the twin of the vertex set $V(G)$. The Mycielskian graph $mathbb{M}(G)$ of $G$ is defined as the graph whose vertex set is $V(G) \cup V'(G) \cup \{w\}$ and the edge set is $E(G) \cup \{v_{i}v'_{j}: v_{i}v_{j}\in E(G) \} \cup \{v'_{i}w \in V'(G) \}$. The vertex $v'_{i}$ is the twin of the vertex $v_{i}$ (or $v_{i} $ is twin of the vertex $v'_{i}$) and the vertex $w$ is the root of $\mathbb{M}(G)$. The closed Mycielskian graph $\mathbb{M}[G]$ of $G$ is defined as the graph whose vertex set is $V(G) \cup V'(G) \cup \{w\}$ and the edge set is $E(G) \cup \{v_{i}v'_{j}: v_{i}v_{j}\in E(G) \} \cup\{v_{i}v'_{i}: i = 1, 2, \ldots, n \} \cup\{v'_{i}w \in V'(G) \}$. The vertex $v'_{i}$ is the twin of the vertex $v_{i}$ (or $v_{i} $ is twin of the vertex $v'_{i}$) and the vertex $w$ is the root of $\mathbb{M}[G]$. In this paper, we study the Wiener and Harary indices of the Mycielskian and closed Mycielskian graphs. KW - closed splitting graph KW - shadow graph KW - closed shadow graph KW - Mycielskian graph KW - closed Mycielskian graph CR - Zhang, P. and Chartrand, G., (2006), Introduction to Graph Theory, Tata McGraw-Hill. CR - Balamoorthy, S., Kavaskar, T. and Vinothkumar, K., (2024), Harary and hyper-Wiener indices of some graph operations, Journal of Inequalities and Applications, pp. 2024. CR - Cambie, S.,(2024), Corrigendum on Wiener index, Zagreb Indices and Harary index of Eulerian graphs, Discrete Applied Mathematics, 347, pp. 139-142. CR - Egan, M. C. G., Antalan, J. R. M and Campe˜na, F. J. H., (2022), On the wiener and harary index of splitting graphs, European Journal of Pure and Applied Mathematics, 15 (2), pp. 602-619. CR - Garg, P. and Goyal, S., (2017), Wiener index of total graph of some graphs, International Journal of Mathematics And its Applications, 5(3-A), pp. 13-24. CR - Garg, P. and Goyal, S., (2017), On the Wiener index of some total graphs, Annals of Pure and Applied Mathematics, 14(2), pp. 337-345. CR - Goyal, S., Garg, P. and Mishra, V. N., (2019), New composition of graphs and their Wiener Indices, Applied Mathematics and Nonlinear Sciences, 4(1), pp. 163-168. CR - Goyal, S., Garg, P. and Mishra, V. N., (2020), New corona and new cluster of graphs and their wiener index, Electron. J. Math. Anal. Appl., 8(1), pp. 100-108. CR - Goyal, S., Jain, D. and Mishra, V.N., (2023), Wiener index of sum of shadowgraphs, Discrete Mathematics, Algorithms and Applications, 15(01), pp. 2250068. CR - Ivanciuc, O., Balaban, T. S., and Balaban, A. T.,(1993) Design of topological indices. Part 4. Reciprocal distance matrix, related local vertex invariants and topological indices, Journal of Mathematical Chemistry, 12(1), pp. 309-318. CR - Meenakshi, A. and Bramila, M., (2024), Hosoya polynomial and wiener index of Abid-Waheed graph (AW) a 8 and (AW) a 10, Journal of Intelligent & Fuzzy Systems, Preprint(Preprint), pp. 1-8. CR - Mycielski, J., (1955), Sur le coloriage des graphes, Colloq. Math., 3, pp. 161-162. CR - Plavsic, D., Nikolic, S., Trinajstic, N. and Mihalic, Z., (1993), On the Harary index for the characterization of chemical graphs, Journal of Mathematical Chemistry, 12, pp. 235-250. CR - Sampathkumar, E. and Walikar, H. B., (1980), On Splitting Graph of a Graph, J. Karnatak Univ. Sci., 25(13), pp. 13-16. CR - Wiener, H., (1947), Structural determination of paraffin boiling points, Journal of the American chemical society, 69(1), pp. 17-20. CR - Yeh, Y. N. and Gutman, I., (1994), On the sum of all distances in composite graphs, Discrete Mathematics, 135(1-3), pp. 359-365. UR - https://dergipark.org.tr/en/pub/twmsjaem/issue//1814076 L1 - https://dergipark.org.tr/en/download/article-file/5376968 ER -