Theorem ttceqd

Description: Equality deduction for transitive closure. (Contributed by Matthew House, 6-Apr-2026)

	Ref	Expression
Hypothesis	ttceqd.1	$$⊢\phi \to A=B$$
Assertion	ttceqd	Could not format assertion : No typesetting found for |- ( ph -> TC+ A = TC+ B ) with typecode |-

Proof

Step	Hyp	Ref	Expression
1		ttceqd.1	$$⊢\phi \to A=B$$
2		ttceq	Could not format ( A = B -> TC+ A = TC+ B ) : No typesetting found for |- ( A = B -> TC+ A = TC+ B ) with typecode |-
3	1 2	syl	Could not format ( ph -> TC+ A = TC+ B ) : No typesetting found for |- ( ph -> TC+ A = TC+ B ) with typecode |-