Metamath Proof Explorer


Theorem relmntop

Description: Manifold is a relation. (Contributed by Thierry Arnoux, 28-Dec-2019)

Ref Expression
Assertion relmntop RelManTop

Proof

Step Hyp Ref Expression
1 df-mntop ManTop=nj|n0j2nd𝜔jHausjLocally TopOpen𝔼hiln
2 1 relopabiv RelManTop