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| Mirrors > Home > ILE Home > Th. List > nnzi | GIF version | ||
| Description: A positive integer is an integer. (Contributed by Mario Carneiro, 18-Feb-2014.) |
| Ref | Expression |
|---|---|
| nnzi.1 | ⊢ 𝑁 ∈ ℕ |
| Ref | Expression |
|---|---|
| nnzi | ⊢ 𝑁 ∈ ℤ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnssz 9666 | . 2 ⊢ ℕ ⊆ ℤ | |
| 2 | nnzi.1 | . 2 ⊢ 𝑁 ∈ ℕ | |
| 3 | 1, 2 | sselii 3245 | 1 ⊢ 𝑁 ∈ ℤ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 ℕcn 9307 ℤcz 9649 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 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-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8271 ax-resscn 8272 ax-1cn 8273 ax-1re 8274 ax-icn 8275 ax-addcl 8276 ax-addrcl 8277 ax-mulcl 8278 ax-addcom 8280 ax-addass 8282 ax-distr 8284 ax-i2m1 8285 ax-0lt1 8286 ax-0id 8288 ax-rnegex 8289 ax-cnre 8291 ax-pre-ltirr 8292 ax-pre-ltwlin 8293 ax-pre-lttrn 8294 ax-pre-ltadd 8296 |
| This proof depends on definitions: df-bi 117 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-iota 5337 df-fun 5379 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-pnf 8363 df-mnf 8364 df-xr 8365 df-ltxr 8366 df-le 8367 df-sub 8501 df-neg 8502 df-inn 9308 df-z 9650 |
| This theorem is used by: 1z 9675 2z 9677 3z 9678 4z 9679 5eluz3 9971 3dvds 12650 3dvdsdec 12651 ndvdsi 12719 6gcd4e2 12791 3lcm2e6woprm 12883 6lcm4e12 12884 3lcm2e6 12958 prm23ge5 13066 pockthi 13160 modxai 13218 mod2xnegi 13221 gcdmodi 13224 prmlem1 13245 prmlem2 13257 ballotfilemofi 13271 ballotfilem1 13272 ballotfilemonn 13273 ballotfilem2 13280 ballotfilemfmpn 13286 ballotfilemefi 13289 ballotfilemodife 13292 ballotfilemiex 13296 ballotfilemsval 13304 ballotfilemsdom 13307 ballotfilemsel1i 13308 ballotfilemsima 13311 ballotfilemrval 13313 ballotfilemfrceq 13324 ballotfilemfrcn0 13325 bassetsnn 13461 strleun 13511 strle1g 13513 2logb9irr 16168 2logb9irrap 16174 birthdaylog2 16189 ppiublem1 16252 ppiublem2 16253 ppiqub 16254 bpos1lem 16270 bposlem6 16277 bposlem8 16279 bposlem9 16280 lgsval 16289 lgsfvalg 16290 lgsfcl2 16291 lgsval2lem 16295 lgsdir2lem5 16317 lgsdir2 16318 lgsne0 16323 2lgs 16389 2lgsoddprmlem2 16391 2lgsoddprm 16398 ex-dvds 16910 ex-gcd 16911 |
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