Theorem ssttctr

Description: Transitivity of A C_ TC+ B relationship. (Contributed by Matthew House, 6-Apr-2026)

	Ref	Expression
Assertion	ssttctr	Could not format assertion : No typesetting found for |- ( ( A C_ TC+ B /\ B C_ TC+ C ) -> A C_ TC+ C ) with typecode |-

Proof

Step	Hyp	Ref	Expression
1		ttcss	Could not format ( B C_ TC+ C -> TC+ B C_ TC+ C ) : No typesetting found for |- ( B C_ TC+ C -> TC+ B C_ TC+ C ) with typecode |-
2		sstr	Could not format ( ( A C_ TC+ B /\ TC+ B C_ TC+ C ) -> A C_ TC+ C ) : No typesetting found for |- ( ( A C_ TC+ B /\ TC+ B C_ TC+ C ) -> A C_ TC+ C ) with typecode |-
3	1 2	sylan2	Could not format ( ( A C_ TC+ B /\ B C_ TC+ C ) -> A C_ TC+ C ) : No typesetting found for |- ( ( A C_ TC+ B /\ B C_ TC+ C ) -> A C_ TC+ C ) with typecode |-