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Theorem uun111 38511
Description: A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
Hypothesis
Ref Expression
uun111.1 ((𝜑𝜑𝜑) → 𝜓)
Assertion
Ref Expression
uun111 (𝜑𝜓)

Proof of Theorem uun111
StepHypRef Expression
1 3anass 1040 . . 3 ((𝜑𝜑𝜑) ↔ (𝜑 ∧ (𝜑𝜑)))
2 anabs5 850 . . 3 ((𝜑 ∧ (𝜑𝜑)) ↔ (𝜑𝜑))
3 anidm 675 . . 3 ((𝜑𝜑) ↔ 𝜑)
41, 2, 33bitri 286 . 2 ((𝜑𝜑𝜑) ↔ 𝜑)
5 uun111.1 . 2 ((𝜑𝜑𝜑) → 𝜓)
64, 5sylbir 225 1 (𝜑𝜓)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384  w3a 1036
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 197  df-an 386  df-3an 1038
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator