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Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports], 2019, Volume 16, Pages 1334–1344
DOI: https://doi.org/10.33048/semi.2019.16.092
(Mi semr1133)
 

This article is cited in 5 scientific papers (total in 5 papers)

Discrete mathematics and mathematical cybernetics

All tight descriptions of $3$-paths centered at $2$-vertices in plane graphs with girth at least $6$

O. V. Borodina, A. O. Ivanovab

a Sobolev Institute of Mathematics, 4, Koptyuga ave., Novosibirsk, 630090, Russia
b Ammosov North-Eastern Federal University, 48, Kulakovskogo str., Yakutsk, 677000, Russia
Full-text PDF (543 kB) Citations (5)
References:
Abstract: Lebesgue (1940) proved that every plane graph with minimum degree $\delta$ at least $3$ and girth $g$ (the length of a shortest cycle) at least $5$ has a path on three vertices ($3$-path) of degree $3$ each. A description is tight if no its parameter can be strengthened, and no triplet dropped.
Borodin et al. (2013) gave a tight description of $3$-paths in plane graphs with $\delta\ge3$ and $g\ge3$, and another tight description was given by Borodin, Ivanova and Kostochka in 2017.
In 2015, we gave seven tight descriptions of $3$-paths when $\delta\ge3$ and $g\ge4$. Furthermore, we proved that this set of tight descriptions is complete, which was a result of a new type in the structural theory of plane graphs. Also, we characterized (2018) all one-term tight descriptions if $\delta\ge3$ and $g\ge3$. The problem of producing all tight descriptions for $g\ge3$ remains widely open even for $\delta\ge3$.
Recently, eleven tight descriptions of $3$-paths were obtained for plane graphs with $\delta=2$ and $g\ge4$ by Jendrol', Maceková, Montassier, and Soták, four of which descriptions are for $g\ge9$. In 2018, Aksenov, Borodin and Ivanova proved ten new tight descriptions of $3$-paths for $\delta=2$ and $g\ge9$ and showed that no other tight descriptions exist.
In this paper we give a complete list of tight descriptions of $3$-paths centered at a $2$-vertex in the plane graphs with $\delta=2$ and $g\ge6$.
Keywords: plane graph, structure properties, tight description, $3$-path, minimum degree, girth.
Funding agency Grant number
Russian Foundation for Basic Research 18-01-00353_a
16-01-00499_a
Siberian Branch of Russian Academy of Sciences I.5.1, project № 0314-2019-0016
Ministry of Education and Science of the Russian Federation FSRG-2017-0013
The first author was supported by the Russian Foundation for Basic Research (grants 18-01-00353 and 16-01-00499) and by Program of fundamental research of the SB RAS № I.5.1, project No. 0314-2019-0016. The second author's work has been supported by the Ministry of Science and Higher Education of the Russian Federation (Grant No. FSRG-2017-0013).
Received August 18, 2019, published September 27, 2019
Bibliographic databases:
Document Type: Article
UDC: 519.172.2
MSC: 05C75
Language: English
Citation: O. V. Borodin, A. O. Ivanova, “All tight descriptions of $3$-paths centered at $2$-vertices in plane graphs with girth at least $6$”, Sib. Èlektron. Mat. Izv., 16 (2019), 1334–1344
Citation in format AMSBIB
\Bibitem{BorIva19}
\by O.~V.~Borodin, A.~O.~Ivanova
\paper All tight descriptions of $3$-paths centered at $2$-vertices in plane graphs with girth at least~$6$
\jour Sib. \`Elektron. Mat. Izv.
\yr 2019
\vol 16
\pages 1334--1344
\mathnet{http://mi.mathnet.ru/semr1133}
\crossref{https://doi.org/10.33048/semi.2019.16.092}
\isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000488211800003}
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  • https://www.mathnet.ru/eng/semr/v16/p1334
  • This publication is cited in the following 5 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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