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We extend Heawood's theorem on the colourability of plane triangulations to triangulations of 3-space. We prove that a triangulation of 3-space can be edge coloured with three colours if and only if all edges have even degree.
Externí odkaz:
http://arxiv.org/abs/2204.02858
Autor:
Saunders, Bethany A., Rosentreter, Ryan E., Macci, Aysha, Ingram, Richard J., Kaplan, Gilaad, Ma, Christopher, Novak, Kerri L., Seow, Cynthia H., Panaccione, Remo, Lu, Cathy
Publikováno v:
In Gastroenterology 18-21 May 2024 166(5) Supplement:S
Autor:
Saunders, Bethany
Publikováno v:
Use of English; Summer2021, Vol. 72 Issue 3, p105-107, 3p