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Theorem vjust 2860
 Description: Soundness justification theorem for df-v 2861. (Contributed by Rodolfo Medina, 27-Apr-2010.)
Assertion
Ref Expression
vjust

Proof of Theorem vjust
Dummy variable is distinct from all other variables.
StepHypRef Expression
1 equid 1676 . . . . 5
21sbt 2033 . . . 4
3 equid 1676 . . . . 5
43sbt 2033 . . . 4
52, 42th 230 . . 3
6 df-clab 2340 . . 3
7 df-clab 2340 . . 3
85, 6, 73bitr4i 268 . 2
98eqriv 2350 1
 Colors of variables: wff setvar class Syntax hints:   wceq 1642  wsb 1648   wcel 1710  cab 2339 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334 This theorem depends on definitions:  df-bi 177  df-an 360  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-clab 2340  df-cleq 2346 This theorem is referenced by: (None)
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