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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 9146 | . 2 ⊢ ℕ ⊆ ℝ | |
| 2 | ax-resscn 8123 | . 2 ⊢ ℝ ⊆ ℂ | |
| 3 | 1, 2 | sstri 3236 | 1 ⊢ ℕ ⊆ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ⊆ wss 3200 ℂcc 8029 ℝcr 8030 ℕcn 9142 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-sep 4207 ax-cnex 8122 ax-resscn 8123 ax-1re 8125 ax-addrcl 8128 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-v 2804 df-in 3206 df-ss 3213 df-int 3929 df-inn 9143 |
| This theorem is referenced by: nnex 9148 nncn 9150 nncnd 9156 nn0addcl 9436 nn0mulcl 9437 dfz2 9551 nnexpcl 10813 fprodnncl 12170 mpodvdsmulf1o 15713 fsumdvdsmul 15714 |
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