ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  3p3e6 Unicode version

Theorem 3p3e6 9074
Description: 3 + 3 = 6. (Contributed by NM, 11-May-2004.)
Assertion
Ref Expression
3p3e6  |-  ( 3  +  3 )  =  6

Proof of Theorem 3p3e6
StepHypRef Expression
1 df-3 8992 . . . 4  |-  3  =  ( 2  +  1 )
21oveq2i 5899 . . 3  |-  ( 3  +  3 )  =  ( 3  +  ( 2  +  1 ) )
3 3cn 9007 . . . 4  |-  3  e.  CC
4 2cn 9003 . . . 4  |-  2  e.  CC
5 ax-1cn 7917 . . . 4  |-  1  e.  CC
63, 4, 5addassi 7978 . . 3  |-  ( ( 3  +  2 )  +  1 )  =  ( 3  +  ( 2  +  1 ) )
72, 6eqtr4i 2211 . 2  |-  ( 3  +  3 )  =  ( ( 3  +  2 )  +  1 )
8 df-6 8995 . . 3  |-  6  =  ( 5  +  1 )
9 3p2e5 9073 . . . 4  |-  ( 3  +  2 )  =  5
109oveq1i 5898 . . 3  |-  ( ( 3  +  2 )  +  1 )  =  ( 5  +  1 )
118, 10eqtr4i 2211 . 2  |-  6  =  ( ( 3  +  2 )  +  1 )
127, 11eqtr4i 2211 1  |-  ( 3  +  3 )  =  6
Colors of variables: wff set class
Syntax hints:    = wceq 1363  (class class class)co 5888   1c1 7825    + caddc 7827   2c2 8983   3c3 8984   5c5 8986   6c6 8987
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1457  ax-7 1458  ax-gen 1459  ax-ie1 1503  ax-ie2 1504  ax-8 1514  ax-10 1515  ax-11 1516  ax-i12 1517  ax-bndl 1519  ax-4 1520  ax-17 1536  ax-i9 1540  ax-ial 1544  ax-i5r 1545  ax-ext 2169  ax-resscn 7916  ax-1cn 7917  ax-1re 7918  ax-addrcl 7921  ax-addass 7926
This theorem depends on definitions:  df-bi 117  df-3an 981  df-tru 1366  df-nf 1471  df-sb 1773  df-clab 2174  df-cleq 2180  df-clel 2183  df-nfc 2318  df-rex 2471  df-v 2751  df-un 3145  df-in 3147  df-ss 3154  df-sn 3610  df-pr 3611  df-op 3613  df-uni 3822  df-br 4016  df-iota 5190  df-fv 5236  df-ov 5891  df-2 8991  df-3 8992  df-4 8993  df-5 8994  df-6 8995
This theorem is referenced by:  3t2e6  9088  binom4  14668  ex-dvds  14753  ex-gcd  14754
  Copyright terms: Public domain W3C validator