ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  6p1e7 Unicode version

Theorem 6p1e7 8121
Description: 6 + 1 = 7. (Contributed by Mario Carneiro, 18-Apr-2015.)
Assertion
Ref Expression
6p1e7  |-  ( 6  +  1 )  =  7

Proof of Theorem 6p1e7
StepHypRef Expression
1 df-7 8054 . 2  |-  7  =  ( 6  +  1 )
21eqcomi 2060 1  |-  ( 6  +  1 )  =  7
Colors of variables: wff set class
Syntax hints:    = wceq 1259  (class class class)co 5540   1c1 6948    + caddc 6950   6c6 8044   7c7 8045
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 103  ax-ia2 104  ax-ia3 105  ax-5 1352  ax-gen 1354  ax-ext 2038
This theorem depends on definitions:  df-bi 114  df-cleq 2049  df-7 8054
This theorem is referenced by:  9t8e72  8554
  Copyright terms: Public domain W3C validator