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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 9275 | . 2 ⊢ 9 ∈ ℕ | |
| 2 | 1 | nnnn0i 9373 | 1 ⊢ 9 ∈ ℕ0 |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 9c9 9164 ℕ0cn0 9365 |
| 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 4201 ax-cnex 8086 ax-resscn 8087 ax-1re 8089 ax-addrcl 8092 |
| 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 3888 df-int 3923 df-br 4083 df-iota 5277 df-fv 5325 df-ov 6003 df-inn 9107 df-2 9165 df-3 9166 df-4 9167 df-5 9168 df-6 9169 df-7 9170 df-8 9171 df-9 9172 df-n0 9366 |
| This theorem is referenced by: deccl 9588 le9lt10 9600 decsucc 9614 9p2e11 9660 9p3e12 9661 9p4e13 9662 9p5e14 9663 9p6e15 9664 9p7e16 9665 9p8e17 9666 9p9e18 9667 9t3e27 9696 9t4e36 9697 9t5e45 9698 9t6e54 9699 9t7e63 9700 9t8e72 9701 9t9e81 9702 sq10e99m1 10930 3dvds2dec 12372 2exp8 12953 dsndxntsetndx 13252 unifndxntsetndx 13259 setsmsdsg 15148 |
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