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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 9314 | . 2 ⊢ 𝐴 ∈ ℝ |
| 3 | 2 | recni 8338 | 1 ⊢ 𝐴 ∈ ℂ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 ℂcc 8177 ℕcn 9305 |
| 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 4249 ax-cnex 8270 ax-resscn 8271 ax-1re 8273 ax-addrcl 8276 |
| 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 9306 |
| This theorem is used by: 9p1e10 9781 numnncl2 9801 dec10p 9821 3dec 11154 4bc2eq6 11215 ef01bndlem 12525 3dvds 12633 pockthi 13139 dec5nprm 13195 dec2nprm 13196 modxai 13197 modxp1i 13199 modsubi 13200 ballotfilem2 13230 ballotfilemfmpn 13236 ballotfilemth 13283 log2ublem1 16089 log2ublem2 16090 log2ublog2 16092 bclbnd 16127 |
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