User talk:MWinter4/4-flat graphs

Latest comment: 6 months ago by MWinter4 in topic Future work

Future work

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  • 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