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Theorem iotabii 6333
 Description: Formula-building deduction for iota. (Contributed by Mario Carneiro, 2-Oct-2015.)
Hypothesis
Ref Expression
iotabii.1 (𝜑𝜓)
Assertion
Ref Expression
iotabii (℩𝑥𝜑) = (℩𝑥𝜓)

Proof of Theorem iotabii
StepHypRef Expression
1 iotabi 6320 . 2 (∀𝑥(𝜑𝜓) → (℩𝑥𝜑) = (℩𝑥𝜓))
2 iotabii.1 . 2 (𝜑𝜓)
31, 2mpg 1792 1 (℩𝑥𝜑) = (℩𝑥𝜓)
 Colors of variables: wff setvar class Syntax hints:   ↔ wb 208   = wceq 1531  ℩cio 6305 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1905  ax-6 1964  ax-7 2009  ax-8 2110  ax-9 2118  ax-ext 2791 This theorem depends on definitions:  df-bi 209  df-an 399  df-ex 1775  df-sb 2064  df-clab 2798  df-cleq 2812  df-clel 2891  df-rex 3142  df-uni 4831  df-iota 6307 This theorem is referenced by:  riotav  7111  ovtpos  7899  cbvsum  15044  cbvprod  15261  oppgid  18476  oppr1  19376  fourierdlem89  42471  fourierdlem90  42472  fourierdlem91  42473  fourierdlem96  42478  fourierdlem97  42479  fourierdlem98  42480  fourierdlem99  42481  fourierdlem100  42482  fourierdlem112  42494
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