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New infinite families of almost-planar crossing-critical graphs

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F08%3A00025241" target="_blank" >RIV/00216224:14330/08:00025241 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    New infinite families of almost-planar crossing-critical graphs

  • Original language description

    We show that, for all choices of integers $k&gt;2$ and $m$, there are simple $3$-connected $k$-crossing-critical graphs containing more than $m$ vertices of each even degree $leq2k-2$. This construction answers one half of a question raised by Bokal, while the other half asking analogously about vertices of odd degrees at least $7$ in crossing-critical graphs remains open. Furthermore, our newly constructed graphs have several other interesting properties; for instance, they are almost planar and theiraverage degree can attain any rational value in the interval $big[3+frac15,6-frac8{k+1}big)$.

  • Czech name

    Nové nekonečné třídy téměř planárních průsečíkově kritických grafů

  • Czech description

    Ukážeme konstrukci jednoduchých 3-souvislých k-průsečíkově kritických grafů, které obsahují libovolně mnoho vrcholů sudých stupňů &lt;=2k-2 pro všechna k&gt;2. Tato konstrukce zodpovídá jednu polovinu otázky Bokala a má několik dalších zajímavých aplikací.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BA - General mathematics

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Electronic Journal of Combinatorics

  • ISSN

    1077-8926

  • e-ISSN

  • Volume of the periodical

    15

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    12

  • Pages from-to

  • UT code for WoS article

    000258122700003

  • EID of the result in the Scopus database