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Theorem bj-dvv 36207
Description: A special instance of bj-hbaeb2 36204. A lemma for distinct var metavariables. Note that the right-hand side is a closed formula (a sentence). (Contributed by BJ, 6-Oct-2018.)
Assertion
Ref Expression
bj-dvv (∀𝑥 𝑥 = 𝑦 ↔ ∀𝑥𝑦 𝑥 = 𝑦)

Proof of Theorem bj-dvv
StepHypRef Expression
1 bj-hbaeb2 36204 1 (∀𝑥 𝑥 = 𝑦 ↔ ∀𝑥𝑦 𝑥 = 𝑦)
Colors of variables: wff setvar class
Syntax hints:  wb 205  wal 1531
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-10 2129  ax-12 2163  ax-13 2365
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 845  df-tru 1536  df-ex 1774  df-nf 1778
This theorem is referenced by: (None)
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