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| Mirrors > Home > ILE Home > Th. List > elnnne0 | GIF version | ||
| Description: The positive integer property expressed in terms of difference from zero. (Contributed by Stefan O'Rear, 12-Sep-2015.) |
| Ref | Expression |
|---|---|
| elnnne0 | ⊢ (𝑁 ∈ ℕ ↔ (𝑁 ∈ ℕ0 ∧ 𝑁 ≠ 0)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfn2 9338 | . . 3 ⊢ ℕ = (ℕ0 ∖ {0}) | |
| 2 | 1 | eleq2i 2273 | . 2 ⊢ (𝑁 ∈ ℕ ↔ 𝑁 ∈ (ℕ0 ∖ {0})) |
| 3 | eldifsn 3766 | . 2 ⊢ (𝑁 ∈ (ℕ0 ∖ {0}) ↔ (𝑁 ∈ ℕ0 ∧ 𝑁 ≠ 0)) | |
| 4 | 2, 3 | bitri 184 | 1 ⊢ (𝑁 ∈ ℕ ↔ (𝑁 ∈ ℕ0 ∧ 𝑁 ≠ 0)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 ∈ wcel 2177 ≠ wne 2377 ∖ cdif 3167 {csn 3638 0cc0 7955 ℕcn 9066 ℕ0cn0 9325 |
| 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-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-sep 4173 ax-pow 4229 ax-pr 4264 ax-un 4493 ax-setind 4598 ax-cnex 8046 ax-resscn 8047 ax-1re 8049 ax-addrcl 8052 ax-0lt1 8061 ax-0id 8063 ax-rnegex 8064 ax-pre-ltirr 8067 ax-pre-lttrn 8069 ax-pre-ltadd 8071 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-nel 2473 df-ral 2490 df-rex 2491 df-rab 2494 df-v 2775 df-dif 3172 df-un 3174 df-in 3176 df-ss 3183 df-nul 3465 df-pw 3623 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3860 df-int 3895 df-br 4055 df-opab 4117 df-xp 4694 df-cnv 4696 df-iota 5246 df-fv 5293 df-ov 5965 df-pnf 8139 df-mnf 8140 df-xr 8141 df-ltxr 8142 df-le 8143 df-inn 9067 df-n0 9326 |
| This theorem is referenced by: nn0n0n1ge2 9473 fzo1fzo0n0 10339 bezoutlemle 12414 eucalgval2 12460 eucalglt 12464 hashfinmndnn 13349 |
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