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| Mirrors > Home > ILE Home > Th. List > nnsscn | GIF version | ||
| Description: The positive integers are a subset of the complex numbers. (Contributed by NM, 2-Aug-2004.) |
| Ref | Expression |
|---|---|
| nnsscn | ⊢ ℕ ⊆ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnssre 9258 | . 2 ⊢ ℕ ⊆ ℝ | |
| 2 | ax-resscn 8235 | . 2 ⊢ ℝ ⊆ ℂ | |
| 3 | 1, 2 | sstri 3251 | 1 ⊢ ℕ ⊆ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ⊆ wss 3214 ℂcc 8141 ℝcr 8142 ℕcn 9254 |
| 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-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-ext 2216 ax-sep 4233 ax-cnex 8234 ax-resscn 8235 ax-1re 8237 ax-addrcl 8240 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-v 2817 df-in 3220 df-ss 3227 df-int 3955 df-inn 9255 |
| This theorem is referenced by: nnex 9260 nncn 9262 nncnd 9268 nn0addcl 9548 nn0mulcl 9549 dfz2 9667 nnexpcl 10938 fprodnncl 12321 mpodvdsmulf1o 15984 fsumdvdsmul 15985 |
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