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| Mirrors > Home > ILE Home > Th. List > 8nn0 | GIF version | ||
| Description: 8 is a nonnegative integer. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| 8nn0 | ⊢ 8 ∈ ℕ0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 8nn 9472 | . 2 ⊢ 8 ∈ ℕ | |
| 2 | 1 | nnnn0i 9571 | 1 ⊢ 8 ∈ ℕ0 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 8c8 9361 ℕ0cn0 9563 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-sep 4249 ax-cnex 8270 ax-resscn 8271 ax-1re 8273 ax-addrcl 8276 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 df-inn 9305 df-2 9363 df-3 9364 df-4 9365 df-5 9366 df-6 9367 df-7 9368 df-8 9369 df-n0 9564 |
| This theorem is used by: 8p3e11 9857 8p4e12 9858 8p5e13 9859 8p6e14 9860 8p7e15 9861 8p8e16 9862 9p9e18 9870 6t4e24 9882 7t5e35 9888 8t3e24 9892 8t4e32 9893 8t5e40 9894 8t6e48 9895 8t7e56 9896 8t8e64 9897 9t3e27 9899 9t9e81 9905 2exp7 13213 2exp11 13215 2exp16 13216 slotsdnscsi 13577 log2ublem3 16085 log2ublog2 16086 2lgslem3a 16212 2lgslem3b 16213 2lgslem3c 16214 2lgslem3d 16215 basendxltedgfndx 16251 ex-exp 16741 |
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