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| Mirrors > Home > ILE Home > Th. List > nncni | GIF version | ||
| Description: A positive integer is a complex number. (Contributed by NM, 18-Aug-1999.) |
| Ref | Expression |
|---|---|
| nnre.1 | ⊢ 𝐴 ∈ ℕ |
| Ref | Expression |
|---|---|
| nncni | ⊢ 𝐴 ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnre.1 | . . 3 ⊢ 𝐴 ∈ ℕ | |
| 2 | 1 | nnrei 9323 | . 2 ⊢ 𝐴 ∈ ℝ |
| 3 | 2 | recni 8345 | 1 ⊢ 𝐴 ∈ ℂ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 ℂcc 8184 ℕcn 9314 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 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-ext 2220 ax-sep 4251 ax-cnex 8277 ax-resscn 8278 ax-1re 8280 ax-addrcl 8283 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-v 2823 df-in 3226 df-ss 3233 df-int 3971 df-inn 9315 |
| This theorem is used by: 9p1e10 9791 numnncl2 9816 dec10p 9836 3dec 11175 4bc2eq6 11236 ef01bndlem 12549 3dvds 12657 pockthi 13167 dec5nprm 13223 dec2nprm 13224 modxai 13225 modxp1i 13227 mod2xnegi 13228 modsubi 13229 23prm 13263 37prm 13265 43prm 13266 83prm 13267 139prm 13268 163prm 13269 1259lem1 13272 1259lem4 13275 ballotfilem2 13287 ballotfilemfmpn 13293 ballotfilemth 13340 log2ublem1 16233 log2ublem2 16234 log2ublog2 16236 bclbnd 16319 bposlem8 16330 |
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