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| Mirrors > Home > ILE Home > Th. List > zsscn | GIF version | ||
| Description: The integers are a subset of the complex numbers. (Contributed by NM, 2-Aug-2004.) |
| Ref | Expression |
|---|---|
| zsscn | ⊢ ℤ ⊆ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zcn 9459 | . 2 ⊢ (𝑥 ∈ ℤ → 𝑥 ∈ ℂ) | |
| 2 | 1 | ssriv 3228 | 1 ⊢ ℤ ⊆ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ⊆ wss 3197 ℂcc 8005 ℤcz 9454 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-resscn 8099 |
| This theorem depends on definitions: df-bi 117 df-3or 1003 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rex 2514 df-rab 2517 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-iota 5278 df-fv 5326 df-ov 6010 df-neg 8328 df-z 9455 |
| This theorem is referenced by: zex 9463 divfnzn 9824 zexpcl 10784 fsumzcl 11921 fprodzcl 12128 4sqlem11 12932 zringbas 14568 zring0 14572 lmbrf 14897 lmres 14930 lgsfcl2 15693 2sqlem6 15807 |
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