Proof of `Characterisation of symmetric VF`

groundedproofs/Lax461425Proofs/SymVFCharacterisation.lean · lax-461425

What this proof establishes

thm✓Lax461425.BoundedDepthCharacterisation
thm✓Lax461425.FormulaSupportDepth
thm✓Lax461425.FormulasForPatterns
thm✓Lax461425.HomomorphismSpanning
thm✓Lax461425.TreedepthForestwidth

thm✓Lax461425.SymmetricVFCharacterisation

Assuming the claims on the left, the claim on the right holds — checked by the archive's pipeline. Proof code is not displayed here.

Read the Lean proof on GitHub

Description

$symVF$ consists of the families spanned by homomorphism polynomials of patterns of bounded treedepth.