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Plane Multigraphs with One-Bend and Circular-Arc Edges of a Fixed Angle

Published: 18 March 2024 Publication History
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  • Abstract

    For an angle, we consider plane graphs and multigraphs in which the edges are either (i) one-bend polylines with an angle between the two edge segments, or (ii) circular arcs of central angle . We derive upper and lower bounds on the maximum density of such graphs in terms of . As an application, we improve upon bounds for the number of edges in graphs (i.e., graphs that can be drawn in the plane with one-bend edges such that any two crossing edges meet at angle ). This is the first improvement on the size of graphs in over a decade.

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    Published In

    cover image Guide Proceedings
    WALCOM: Algorithms and Computation: 18th International Conference and Workshops on Algorithms and Computation, WALCOM 2024, Kanazawa, Japan, March 18–20, 2024, Proceedings
    Mar 2024
    448 pages
    ISBN:978-981-97-0565-8
    DOI:10.1007/978-981-97-0566-5
    • Editors:
    • Ryuhei Uehara,
    • Katsuhisa Yamanaka,
    • Hsu-Chun Yen

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    Springer-Verlag

    Berlin, Heidelberg

    Publication History

    Published: 18 March 2024

    Author Tags

    1. circular arc
    2. one-bend drawing
    3. -angle crossing drawing

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