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Theorem merco1lem13 1494
Description: Used to rederive the Tarski-Bernays-Wajsberg axioms from merco1 1478. (Contributed by Anthony Hart, 18-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
merco1lem13

Proof of Theorem merco1lem13
StepHypRef Expression
1 merco1 1478 . . . 4
2 merco1lem4 1484 . . . 4
31, 2ax-mp 5 . . 3
4 merco1lem12 1493 . . 3
53, 4ax-mp 5 . 2
6 merco1 1478 . 2
75, 6ax-mp 5 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wfal 1317
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 177  df-tru 1319  df-fal 1320
This theorem is referenced by:  merco1lem14  1495  merco1lem15  1496  retbwax1  1500
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