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| Mirrors > Home > ILE Home > Th. List > 9nn0 | GIF version | ||
| Description: 9 is a nonnegative integer. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| 9nn0 | ⊢ 9 ∈ ℕ0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 9nn 9354 | . 2 ⊢ 9 ∈ ℕ | |
| 2 | 1 | nnnn0i 9452 | 1 ⊢ 9 ∈ ℕ0 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 9c9 9243 ℕ0cn0 9444 |
| 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 2213 ax-sep 4212 ax-cnex 8166 ax-resscn 8167 ax-1re 8169 ax-addrcl 8172 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-v 2805 df-un 3205 df-in 3207 df-ss 3214 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-iota 5293 df-fv 5341 df-ov 6031 df-inn 9186 df-2 9244 df-3 9245 df-4 9246 df-5 9247 df-6 9248 df-7 9249 df-8 9250 df-9 9251 df-n0 9445 |
| This theorem is referenced by: deccl 9669 le9lt10 9681 decsucc 9695 9p2e11 9741 9p3e12 9742 9p4e13 9743 9p5e14 9744 9p6e15 9745 9p7e16 9746 9p8e17 9747 9p9e18 9748 9t3e27 9777 9t4e36 9778 9t5e45 9779 9t6e54 9780 9t7e63 9781 9t8e72 9782 9t9e81 9783 sq10e99m1 11021 3dvds2dec 12490 2exp8 13071 dsndxntsetndx 13370 unifndxntsetndx 13377 setsmsdsg 15274 |
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