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User talk:MWinter4/4-flat graphs

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Future work

[edit]
  • 4-flat graphs are closed under cloning edges and -transformations. It is conjectured that they are also closed under -transformations.[citation needed]
  • Alternative to the notion of 4-flat graphs based on almost embeddings () with its higher-dimensional analogues () and leading to van der Holst's topological graph invariant .
  • Alternative definitions of 4-flat using general CW-complex (instead of regular CW-complexes).[citation needed]

MWinter4 (talk) 20:22, 28 May 2024 (UTC)[reply]