Theorem fences

Description: The Theorem of Fences by Equivalences: all conceivable equivalence relations (besides the comember equivalence relation cf. mpet ) generate a partition of the members. (Contributed by Peter Mazsa, 26-Sep-2021)

	Ref	Expression
Assertion	fences	Could not format assertion : No typesetting found for |- ( R ErALTV A -> MembPart A ) with typecode |-

Proof

Step	Hyp	Ref	Expression
1		mainer	Could not format ( R ErALTV A -> CoMembEr A ) : No typesetting found for |- ( R ErALTV A -> CoMembEr A ) with typecode |-
2		mpet	Could not format ( MembPart A <-> CoMembEr A ) : No typesetting found for |- ( MembPart A <-> CoMembEr A ) with typecode |-
3	1 2	sylibr	Could not format ( R ErALTV A -> MembPart A ) : No typesetting found for |- ( R ErALTV A -> MembPart A ) with typecode |-