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Long alternating paths in bicolored point sets

Result description

Given n red and n blue points in convex position in the plane, we show that there exists a noncrossing alternating path of length n + c(n/log n)^{1/2}. We disprove a conjecture of Erdős by constructing an example without any such path of length greater than 4n/3 + c'n^{1/2}.

Keywords

alternatingpathsbicoloredpointsets

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Long alternating paths in bicolored point sets

  • Original language description

    Given n red and n blue points in convex position in the plane, we show that there exists a noncrossing alternating path of length n + c(n/log n)^{1/2}. We disprove a conjecture of Erdős by constructing an example without any such path of length greater than 4n/3 + c'n^{1/2}.

  • Czech name

    Dlouhé alternující cesty v dvouobarvených množinách bodů

  • Czech description

    Ukážeme, že v každé množině n červených a n modrých bodů v rovině v konvexní poloze existuje nekřížící se alternující cesta délky n + c(n/log n)^{1/2}. Vyvrátítme Erdősovu domněnku sestrojením příkladu, kde není žádná taková cesta délky větsí než 4n/3 +c'n^{1/2}.

Classification

  • Type

    Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BA - General mathematics

  • OECD FORD branch

Result continuities

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

    Discrete Mathematics

  • ISSN

    0012-365X

  • e-ISSN

  • Volume of the periodical

    308

  • Issue of the periodical within the volume

    19

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    7

  • Pages from-to

  • UT code for WoS article

    000257978700003

  • EID of the result in the Scopus database

Basic information

Result type

Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

Jx

CEP

BA - General mathematics

Year of implementation

2008