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Theorem 7nn0 9316
Description: 7 is a nonnegative integer. (Contributed by Mario Carneiro, 19-Apr-2015.)
Assertion
Ref Expression
7nn0 7 ∈ ℕ0

Proof of Theorem 7nn0
StepHypRef Expression
1 7nn 9202 . 2 7 ∈ ℕ
21nnnn0i 9302 1 7 ∈ ℕ0
Colors of variables: wff set class
Syntax hints:  wcel 2175  7c7 9091  0cn0 9294
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 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-ext 2186  ax-sep 4161  ax-cnex 8015  ax-resscn 8016  ax-1re 8018  ax-addrcl 8021
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1375  df-nf 1483  df-sb 1785  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ral 2488  df-rex 2489  df-v 2773  df-un 3169  df-in 3171  df-ss 3178  df-sn 3638  df-pr 3639  df-op 3641  df-uni 3850  df-int 3885  df-br 4044  df-iota 5231  df-fv 5278  df-ov 5946  df-inn 9036  df-2 9094  df-3 9095  df-4 9096  df-5 9097  df-6 9098  df-7 9099  df-n0 9295
This theorem is referenced by:  7p4e11  9578  7p5e12  9579  7p6e13  9580  7p7e14  9581  8p8e16  9588  9p8e17  9595  9p9e18  9596  7t3e21  9612  7t4e28  9613  7t5e35  9614  7t6e42  9615  7t7e49  9616  8t8e64  9623  9t3e27  9625  9t4e36  9626  9t8e72  9630  9t9e81  9631
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