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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 9295 | . 2 ⊢ 9 ∈ ℕ | |
| 2 | 1 | nnnn0i 9393 | 1 ⊢ 9 ∈ ℕ0 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 9c9 9184 ℕ0cn0 9385 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-sep 4202 ax-cnex 8106 ax-resscn 8107 ax-1re 8109 ax-addrcl 8112 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-br 4084 df-iota 5281 df-fv 5329 df-ov 6013 df-inn 9127 df-2 9185 df-3 9186 df-4 9187 df-5 9188 df-6 9189 df-7 9190 df-8 9191 df-9 9192 df-n0 9386 |
| This theorem is referenced by: deccl 9608 le9lt10 9620 decsucc 9634 9p2e11 9680 9p3e12 9681 9p4e13 9682 9p5e14 9683 9p6e15 9684 9p7e16 9685 9p8e17 9686 9p9e18 9687 9t3e27 9716 9t4e36 9717 9t5e45 9718 9t6e54 9719 9t7e63 9720 9t8e72 9721 9t9e81 9722 sq10e99m1 10952 3dvds2dec 12398 2exp8 12979 dsndxntsetndx 13278 unifndxntsetndx 13285 setsmsdsg 15175 |
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