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| Mirrors > Home > ILE Home > Th. List > nn0ssz | GIF version | ||
| Description: Nonnegative integers are a subset of the integers. (Contributed by NM, 9-May-2004.) |
| Ref | Expression |
|---|---|
| nn0ssz | ⊢ ℕ0 ⊆ ℤ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-n0 9514 | . 2 ⊢ ℕ0 = (ℕ ∪ {0}) | |
| 2 | nnssz 9611 | . . 3 ⊢ ℕ ⊆ ℤ | |
| 3 | 0z 9605 | . . . 4 ⊢ 0 ∈ ℤ | |
| 4 | c0ex 8284 | . . . . 5 ⊢ 0 ∈ V | |
| 5 | 4 | snss 3834 | . . . 4 ⊢ (0 ∈ ℤ ↔ {0} ⊆ ℤ) |
| 6 | 3, 5 | mpbi 145 | . . 3 ⊢ {0} ⊆ ℤ |
| 7 | 2, 6 | unssi 3398 | . 2 ⊢ (ℕ ∪ {0}) ⊆ ℤ |
| 8 | 1, 7 | eqsstri 3274 | 1 ⊢ ℕ0 ⊆ ℤ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2205 ∪ cun 3212 ⊆ wss 3214 {csn 3694 0cc0 8143 ℕcn 9254 ℕ0cn0 9513 ℤcz 9594 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-distr 8247 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-cnre 8254 ax-pre-ltirr 8255 ax-pre-ltwlin 8256 ax-pre-lttrn 8257 ax-pre-ltadd 8259 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3046 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-br 4115 df-opab 4177 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-iota 5317 df-fun 5359 df-fv 5365 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-pnf 8326 df-mnf 8327 df-xr 8328 df-ltxr 8329 df-le 8330 df-sub 8462 df-neg 8463 df-inn 9255 df-n0 9514 df-z 9595 |
| This theorem is referenced by: nn0z 9614 nn0zi 9616 nn0zd 9716 nn0ssq 9978 oddnn02np1 12591 evennn02n 12593 eulerthlemrprm 12951 eulerthlema 12952 eulerthlemh 12953 eulerthlemth 12954 pcprecl 13012 pcprendvds 13013 pcpremul 13016 |
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