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Theorem idiALT 31455
Description: Placeholder for idi 2. Though unnecessary, this theorem is sometimes used in proofs in this mathbox for pedagogical purposes. (Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
Hypothesis
Ref Expression
idiALT.1  |-  ph
Assertion
Ref Expression
idiALT  |-  ph

Proof of Theorem idiALT
StepHypRef Expression
1 idiALT.1 1  |-  ph
Colors of variables: wff setvar class
This theorem is referenced by:  ax6e2nd  31569  trsspwALT2  31855  sspwtrALT  31858  suctrALT  31864  sstrALT2  31873  suctrALT3  31962  sspwimpALT  31963  ax6e2ndALT  31968  ax6e2ndeqALT  31969  isosctrlem1ALT  31972  iunconlem2  31973  sineq0ALT  31975
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