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| Mirrors > Home > ILE Home > Th. List > 9nn0 | Unicode version | ||
| Description: 9 is a nonnegative integer. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| 9nn0 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 9nn 9423 |
. 2
| |
| 2 | 1 | nnnn0i 9521 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 ax-sep 4233 ax-cnex 8234 ax-resscn 8235 ax-1re 8237 ax-addrcl 8240 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-un 3218 df-in 3220 df-ss 3227 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-br 4115 df-iota 5317 df-fv 5365 df-ov 6061 df-inn 9255 df-2 9313 df-3 9314 df-4 9315 df-5 9316 df-6 9317 df-7 9318 df-8 9319 df-9 9320 df-n0 9514 |
| This theorem is referenced by: deccl 9741 le9lt10 9753 decsucc 9767 9p2e11 9813 9p3e12 9814 9p4e13 9815 9p5e14 9816 9p6e15 9817 9p7e16 9818 9p8e17 9819 9p9e18 9820 9t3e27 9849 9t4e36 9850 9t5e45 9851 9t6e54 9852 9t7e63 9853 9t8e72 9854 9t9e81 9855 sq10e99m1 11100 3dvds2dec 12577 2exp8 13158 dsndxntsetndx 13521 unifndxntsetndx 13528 setsmsdsg 15471 |
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