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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 9307 | . . 3 ⊢ ℕ = (ℕ0 ∖ {0}) | |
| 2 | 1 | eleq2i 2271 | . 2 ⊢ (𝑁 ∈ ℕ ↔ 𝑁 ∈ (ℕ0 ∖ {0})) |
| 3 | eldifsn 3759 | . 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 2175 ≠ wne 2375 ∖ cdif 3162 {csn 3632 0cc0 7924 ℕcn 9035 ℕ0cn0 9294 |
| 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 710 ax-5 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-13 2177 ax-14 2178 ax-ext 2186 ax-sep 4161 ax-pow 4217 ax-pr 4252 ax-un 4479 ax-setind 4584 ax-cnex 8015 ax-resscn 8016 ax-1re 8018 ax-addrcl 8021 ax-0lt1 8030 ax-0id 8032 ax-rnegex 8033 ax-pre-ltirr 8036 ax-pre-lttrn 8038 ax-pre-ltadd 8040 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1375 df-fal 1378 df-nf 1483 df-sb 1785 df-eu 2056 df-mo 2057 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-ne 2376 df-nel 2471 df-ral 2488 df-rex 2489 df-rab 2492 df-v 2773 df-dif 3167 df-un 3169 df-in 3171 df-ss 3178 df-nul 3460 df-pw 3617 df-sn 3638 df-pr 3639 df-op 3641 df-uni 3850 df-int 3885 df-br 4044 df-opab 4105 df-xp 4680 df-cnv 4682 df-iota 5231 df-fv 5278 df-ov 5946 df-pnf 8108 df-mnf 8109 df-xr 8110 df-ltxr 8111 df-le 8112 df-inn 9036 df-n0 9295 |
| This theorem is referenced by: nn0n0n1ge2 9442 fzo1fzo0n0 10305 bezoutlemle 12300 eucalgval2 12346 eucalglt 12350 hashfinmndnn 13235 |
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