Theorem wl-impchain-mp-x 32445

Description: This series of theorems provide a means of exchanging the consequent of an implication chain via a simple implication. In the main part, the theorems ax-mp 5, syl 17, syl6 34, syl8 74 form the beginning of this series. These theorems are replicated here, but with proofs that aim at a recursive scheme, allowing to base a proof on that of the previous one in the series. (Contributed by Wolf Lammen, 17-Nov-2019.)

Assertion

Ref	Expression
wl-impchain-mp-x	⊢ ⊤

Proof of Theorem wl-impchain-mp-x

Step	Hyp	Ref	Expression
1		tru 1479	1 ⊢ ⊤

Syntax hints:  ⊤wtru 1476

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 196  df-tru 1478

This theorem is referenced by: (None)