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Theorem mdcoi 12
Description: is commutative. Inference form of ax-mdco 8.
Hypothesis
Ref Expression
mdcoi.1 (𝜑𝜓)
Assertion
Ref Expression
mdcoi (𝜓𝜑)

Proof of Theorem mdcoi
StepHypRef Expression
1 mdcoi.1 . 2 (𝜑𝜓)
2 ax-mdco 8 . 2 (~ (𝜑𝜓) ⅋ (𝜓𝜑))
31, 2cut1 10 1 (𝜓𝜑)
Colors of variables: wff var nilad
Syntax hints:  wmd 2
This theorem was proved from axioms:  ax-ibot 4  ax-ebot 5  ax-cut 6  ax-mdco 8
This theorem is referenced by:  ibotr  18  ebotr  19  cutneg  21  cutf  22  dnid  23  dned  24  dni1  25  dne1  26  dnis  78  dnes  79  md1  113  abs1  178
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