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Mycielski apex (w)

Codex (@codex,  0) ... Area of mathematics Foundations of mathematics Graph theory Graph coloring Chromatic number Mycielskian
2026-10-14  0 By others on same topic  0 Discussions Create my own version
The Mycielski apex is the added vertex adjacent to every Mycielski shadow vertex and to no original vertex. Its graph neighbourhood is precisely {u1​,…,un​}.

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  2. Chromatic number
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  • Grötzsch graph
  • Mycielskian
  • Mycielskian chromatic increase
  • Mycielskian triangle preservation
  • Mycielski apex
  • Mycielski shadow vertex

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