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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2020-11-3-267-274</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-420</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group></article-categories><title-group><article-title>M-polynomial and related degree-based topological indices of the third type of hex-derived network</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Das</surname><given-names>Shibsankar</given-names></name></name-alternatives><bio xml:lang="en"><p>Varanasi-221005, Uttar Pradesh</p></bio><email xlink:type="simple">shib.iitm@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Rai</surname><given-names>Shikha</given-names></name></name-alternatives><bio xml:lang="en"><p>Varanasi-221005, Uttar Pradesh</p></bio><email xlink:type="simple">shikharai48@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Department of Mathematics, Institute of Science, Banaras Hindu University</institution><country>India</country></aff><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>07</month><year>2025</year></pub-date><volume>11</volume><issue>3</issue><elocation-id>267–274</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Das S., Rai S., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Das S., Rai S.</copyright-holder><copyright-holder xml:lang="en">Das S., Rai S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://nanojournal.ifmo.ru/jour/article/view/420">https://nanojournal.ifmo.ru/jour/article/view/420</self-uri><abstract><p>In the field of chemical graph theory, a topological index is a real number which is correlated with the various physical properties, biological activities and chemical reactivities of molecular graphs. In recent trends, M-polynomials are used to compute numerous degree-based topological indices. Hex-derived networks have a wide range of applications in pharmaceutical sciences, electronics and communication networks. In this paper, we would like to determine a general form of M-polynomial for the third type of hex-derived network of dimension n and hence generate the related degree-based topological indices. Additionally, we plot the M-polynomial and all the related degree-based topological indices for several n.</p></abstract><kwd-group xml:lang="en"><kwd>Third type of hex-derived network</kwd><kwd>Degree-based topological indices</kwd><kwd>M-polynomial</kwd><kwd>Graph polynomial</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">West D.B. Introduction to Graph Theory. 2nd Edition, Prentice Hall., 2000.</mixed-citation><mixed-citation xml:lang="en">West D.B. Introduction to Graph Theory. 2nd Edition, Prentice Hall., 2000.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Hammack R., Imrich W., Klavzar S.ˇ Handbook of Product Graphs. 2nd Edition, CRC Press, Inc., Boca Raton, FL, USA, 2011.</mixed-citation><mixed-citation xml:lang="en">Hammack R., Imrich W., Klavzar S.ˇ Handbook of Product Graphs. 2nd Edition, CRC Press, Inc., Boca Raton, FL, USA, 2011.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Estrada E. Randic index, irregularity and complex biomolecular networks.´ Acta Chimica Slovenica, 2010, 57, P. 597–603.</mixed-citation><mixed-citation xml:lang="en">Estrada E. Randic index, irregularity and complex biomolecular networks.´ Acta Chimica Slovenica, 2010, 57, P. 597–603.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Garc´ıa-Domenech R., Galvez J., de Juli´ an-Ortiz J.V., Pogliani L. Some new trends in chemical graph theory.´ Chemical Reviews, 2008, 108(3), P. 1127–1169.</mixed-citation><mixed-citation xml:lang="en">Garc´ıa-Domenech R., Galvez J., de Juli´ an-Ortiz J.V., Pogliani L. Some new trends in chemical graph theory.´ Chemical Reviews, 2008, 108(3), P. 1127–1169.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Balaban A.T. Chemical applications of graph theory. Mathematical Chemistry. Academic Press., 1976.</mixed-citation><mixed-citation xml:lang="en">Balaban A.T. Chemical applications of graph theory. Mathematical Chemistry. Academic Press., 1976.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Trinajstic N.´ Chemical Graph Theory. Mathematical Chemistry Series. 2nd edition, CRC Press., 1992.</mixed-citation><mixed-citation xml:lang="en">Trinajstic N.´ Chemical Graph Theory. Mathematical Chemistry Series. 2nd edition, CRC Press., 1992.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Gross J.L., Yellen J., Zhang P. Handbook of Graph Theory. Discrete Mathematics and Its Applications. 2nd edition, Chapman and Hall/CRC., 2013.</mixed-citation><mixed-citation xml:lang="en">Gross J.L., Yellen J., Zhang P. Handbook of Graph Theory. Discrete Mathematics and Its Applications. 2nd edition, Chapman and Hall/CRC., 2013.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Gutman I. Degree-based topological indices. Croatica Chemica Acta, 2013, 86(4), P. 351–361.</mixed-citation><mixed-citation xml:lang="en">Gutman I. Degree-based topological indices. Croatica Chemica Acta, 2013, 86(4), P. 351–361.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Balaban A.T. Highly discriminating distance-based topological index. Chemical Physics Letters, 1982, 89(5), P. 399–404.</mixed-citation><mixed-citation xml:lang="en">Balaban A.T. Highly discriminating distance-based topological index. Chemical Physics Letters, 1982, 89(5), P. 399–404.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Pattabiraman K. Degree and distance based topological indices of graphs. Electronic Notes in Discrete Mathematics, 2017, 63, P. 145–159.</mixed-citation><mixed-citation xml:lang="en">Pattabiraman K. Degree and distance based topological indices of graphs. Electronic Notes in Discrete Mathematics, 2017, 63, P. 145–159.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Khadikar P.V., Deshpande N.V., Kale P.P., Dobrynin A., Gutman I., Domotor G. The szeged index and an analogy with the wiener index. Journal of Chemical Information and Computer Sciences, 1995, 35(3), P. 547–550.</mixed-citation><mixed-citation xml:lang="en">Khadikar P.V., Deshpande N.V., Kale P.P., Dobrynin A., Gutman I., Domotor G. The szeged index and an analogy with the wiener index. Journal of Chemical Information and Computer Sciences, 1995, 35(3), P. 547–550.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Gutman I. The acyclic polynomial of a graph. Publications de I’Institut Mathematique´ , 1977, 22(36) (42), P. 63–69.</mixed-citation><mixed-citation xml:lang="en">Gutman I. The acyclic polynomial of a graph. Publications de I’Institut Mathematique´ , 1977, 22(36) (42), P. 63–69.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Farrell E.J. An introduction to matching polynomials. Journal of Combinatorial Theory, Series B, 1979, 27(1), P. 75–86.</mixed-citation><mixed-citation xml:lang="en">Farrell E.J. An introduction to matching polynomials. Journal of Combinatorial Theory, Series B, 1979, 27(1), P. 75–86.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang H., Zhang F. The clar covering polynomial of hexagonal systems I. Discrete Applied Mathematics, 1996, 69(1-2), P. 147–167.</mixed-citation><mixed-citation xml:lang="en">Zhang H., Zhang F. The clar covering polynomial of hexagonal systems I. Discrete Applied Mathematics, 1996, 69(1-2), P. 147–167.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Gutman I. Some relations between distance-based polynomials of trees. Bulletin (Academie serbe des sciences et des arts. Classe des sciences´ mathematiques et naturelles. Sciences math´ ematiques´ ), 2005, 30, P. 1–7.</mixed-citation><mixed-citation xml:lang="en">Gutman I. Some relations between distance-based polynomials of trees. Bulletin (Academie serbe des sciences et des arts. Classe des sciences´ mathematiques et naturelles. Sciences math´ ematiques´ ), 2005, 30, P. 1–7.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Kauffman L.H. A tutte polynomial for signed graphs. Discrete Applied Mathematics, 1989, 25(1-2), P. 105–127.</mixed-citation><mixed-citation xml:lang="en">Kauffman L.H. A tutte polynomial for signed graphs. Discrete Applied Mathematics, 1989, 25(1-2), P. 105–127.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Hosoya H. On some counting polynomials in chemistry. Discrete Applied Mathematics, 1988, 19(1-3), P. 239–257.</mixed-citation><mixed-citation xml:lang="en">Hosoya H. On some counting polynomials in chemistry. Discrete Applied Mathematics, 1988, 19(1-3), P. 239–257.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Wiener H. Structural determination of paraffin boiling points. Journal of the American Chemical Society, 1947, 69(1), P. 17–20.</mixed-citation><mixed-citation xml:lang="en">Wiener H. Structural determination of paraffin boiling points. Journal of the American Chemical Society, 1947, 69(1), P. 17–20.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Deutsch E., Klavzar S. M-polynomial and degree-based topological indices.ˇ Iranian Journal of Mathematical Chemistry, 2015, 6(2), P. 93– 102.</mixed-citation><mixed-citation xml:lang="en">Deutsch E., Klavzar S. M-polynomial and degree-based topological indices.ˇ Iranian Journal of Mathematical Chemistry, 2015, 6(2), P. 93– 102.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Munir M., Nazeer W., Rafique S., Kang S.M. M-polynomial and degree-based topological indices of polyhex nanotubes. Symmetry, 2016, 8(12), P. 149.</mixed-citation><mixed-citation xml:lang="en">Munir M., Nazeer W., Rafique S., Kang S.M. M-polynomial and degree-based topological indices of polyhex nanotubes. Symmetry, 2016, 8(12), P. 149.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Munir M., Nazeer W., Rafique S., Kang S.M. M-polynomial and related topological indices of nanostar dendrimers. Symmetry, 2016, 8(9), P. 97.</mixed-citation><mixed-citation xml:lang="en">Munir M., Nazeer W., Rafique S., Kang S.M. M-polynomial and related topological indices of nanostar dendrimers. Symmetry, 2016, 8(9), P. 97.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Munir M., Nazeer W., Nizami A.R., Rafique S., Kang S.M. M-polynomial and topological indices of titania nanotubes. Symmetry, 2016, 8(1-9), P. 117.</mixed-citation><mixed-citation xml:lang="en">Munir M., Nazeer W., Nizami A.R., Rafique S., Kang S.M. M-polynomial and topological indices of titania nanotubes. Symmetry, 2016, 8(1-9), P. 117.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Kwun Y.C., Munir M., Nazeer W., Rafique S., Kang S.M. M-polynomials and topological indices of V-phenylenic nanotubes and nanotori. Scientific Reports, P. 2017, 7(1), P. 1–9.</mixed-citation><mixed-citation xml:lang="en">Kwun Y.C., Munir M., Nazeer W., Rafique S., Kang S.M. M-polynomials and topological indices of V-phenylenic nanotubes and nanotori. Scientific Reports, P. 2017, 7(1), P. 1–9.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Kang S.M., Nazeer W., Zahid M.A., Nizami A.R., Aslam A., Munir M. M-polynomials and topological indices of hex-derived networks. Open Physics, 2018, 16(1), P. 394–403.</mixed-citation><mixed-citation xml:lang="en">Kang S.M., Nazeer W., Zahid M.A., Nizami A.R., Aslam A., Munir M. M-polynomials and topological indices of hex-derived networks. Open Physics, 2018, 16(1), P. 394–403.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Deng H., Yang J., Xia F. A general modeling of some vertex-degree based topological indices in benzenoid systems and phenylenes. Computers &amp; Mathematics with Applications, 2011, 61(10), P. 3017–3023.</mixed-citation><mixed-citation xml:lang="en">Deng H., Yang J., Xia F. A general modeling of some vertex-degree based topological indices in benzenoid systems and phenylenes. Computers &amp; Mathematics with Applications, 2011, 61(10), P. 3017–3023.</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Gutman I., Trinajstic N. Graph theory and molecular orbitals. Total´ π-electron energy of alternant hydrocarbons. Chemical Physics Letters, 1972, 17(4), P. 535–538.</mixed-citation><mixed-citation xml:lang="en">Gutman I., Trinajstic N. Graph theory and molecular orbitals. Total´ π-electron energy of alternant hydrocarbons. Chemical Physics Letters, 1972, 17(4), P. 535–538.</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Miliceviˇ c A., Nikoli´ c S., Trinajsti´ c N. On reformulated zagreb indices.´ Molecular Diversity, 2004, 8, P. 393–399.</mixed-citation><mixed-citation xml:lang="en">Miliceviˇ c A., Nikoli´ c S., Trinajsti´ c N. On reformulated zagreb indices.´ Molecular Diversity, 2004, 8, P. 393–399.</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Bollobas B., Erd´ os P. Graphs of extremal weights.˝ Ars Combinatoria, 1998, 50, P. 225–233.</mixed-citation><mixed-citation xml:lang="en">Bollobas B., Erd´ os P. Graphs of extremal weights.˝ Ars Combinatoria, 1998, 50, P. 225–233.</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">Amic D., Be´ slo D., Luˇ ciˇ c B., Nikoli´ c S., Trinajsti´ c N. The vertex-connectivity index revisited.´ Journal of Chemical Information and Computer Sciences, 1998, 38(5), P. 819–822.</mixed-citation><mixed-citation xml:lang="en">Amic D., Be´ slo D., Luˇ ciˇ c B., Nikoli´ c S., Trinajsti´ c N. The vertex-connectivity index revisited.´ Journal of Chemical Information and Computer Sciences, 1998, 38(5), P. 819–822.</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Vukiceviˇ c D., Ga´ sperov M. Bond additive modeling 1. adriatic indices.ˇ Croatica Chemica Acta, 2010, 83(3), P. 243–260.</mixed-citation><mixed-citation xml:lang="en">Vukiceviˇ c D., Ga´ sperov M. Bond additive modeling 1. adriatic indices.ˇ Croatica Chemica Acta, 2010, 83(3), P. 243–260.</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Favaron O., Maheo M., Sacl´ e J.-F. Some eigenvalue properties in graphs (conjectures of graffiti-II).´ Discrete Mathematics, 1993, 111(1-3), P. 197–220.</mixed-citation><mixed-citation xml:lang="en">Favaron O., Maheo M., Sacl´ e J.-F. Some eigenvalue properties in graphs (conjectures of graffiti-II).´ Discrete Mathematics, 1993, 111(1-3), P. 197–220.</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">Furtula B., Graovac A., Vukiceviˇ c D. Augmented zagreb index.´ Journal of Mathematical Chemistry, 2010, 48(2), P. 370–380.</mixed-citation><mixed-citation xml:lang="en">Furtula B., Graovac A., Vukiceviˇ c D. Augmented zagreb index.´ Journal of Mathematical Chemistry, 2010, 48(2), P. 370–380.</mixed-citation></citation-alternatives></ref><ref id="cit33"><label>33</label><citation-alternatives><mixed-citation xml:lang="ru">Randic M. Characterization of molecular branching.´ Journal of the American Chemical Society, 1975, 97(23), P. 6609–6615.</mixed-citation><mixed-citation xml:lang="en">Randic M. Characterization of molecular branching.´ Journal of the American Chemical Society, 1975, 97(23), P. 6609–6615.</mixed-citation></citation-alternatives></ref><ref id="cit34"><label>34</label><citation-alternatives><mixed-citation xml:lang="ru">Sedlar J., Stevanovic D., Vasilyev A. On the inverse sum indeg index.´ Discrete Applied Mathematics, 2015, 184, P. 202–212.</mixed-citation><mixed-citation xml:lang="en">Sedlar J., Stevanovic D., Vasilyev A. On the inverse sum indeg index.´ Discrete Applied Mathematics, 2015, 184, P. 202–212.</mixed-citation></citation-alternatives></ref><ref id="cit35"><label>35</label><citation-alternatives><mixed-citation xml:lang="ru">Nocetti F.G., Stojmenovic I., Zhang J. Addressing and routing in hexagonal networks with applications for tracking mobile users and connection rerouting in cellular networks. IEEE Transactions on Parallel and Distributed Systems, 2002, 13(9), P. 963–971.</mixed-citation><mixed-citation xml:lang="en">Nocetti F.G., Stojmenovic I., Zhang J. Addressing and routing in hexagonal networks with applications for tracking mobile users and connection rerouting in cellular networks. IEEE Transactions on Parallel and Distributed Systems, 2002, 13(9), P. 963–971.</mixed-citation></citation-alternatives></ref><ref id="cit36"><label>36</label><citation-alternatives><mixed-citation xml:lang="ru">Manuel P., Bharati R., Rajasingh I., Monica M C. On minimum metric dimension of honeycomb networks. Journal of Discrete Algorithms, 2008, 6(1), P. 20–27.</mixed-citation><mixed-citation xml:lang="en">Manuel P., Bharati R., Rajasingh I., Monica M C. On minimum metric dimension of honeycomb networks. Journal of Discrete Algorithms, 2008, 6(1), P. 20–27.</mixed-citation></citation-alternatives></ref><ref id="cit37"><label>37</label><citation-alternatives><mixed-citation xml:lang="ru">Raj F.S., George A. On the metric dimension of HDN 3 and PHDN 3. 2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI), 2017, P. 1333–1336.</mixed-citation><mixed-citation xml:lang="en">Raj F.S., George A. On the metric dimension of HDN 3 and PHDN 3. 2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI), 2017, P. 1333–1336.</mixed-citation></citation-alternatives></ref><ref id="cit38"><label>38</label><citation-alternatives><mixed-citation xml:lang="ru">Wei C.-C., Ali H., Binyamin M.A., Naeem M.N., Liu J.-B. Computing degree based topological properties of third type of hex-derived networks. Mathematics, 2019, 7(4), P. 368.</mixed-citation><mixed-citation xml:lang="en">Wei C.-C., Ali H., Binyamin M.A., Naeem M.N., Liu J.-B. Computing degree based topological properties of third type of hex-derived networks. Mathematics, 2019, 7(4), P. 368.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
