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| Mirrors > Home > ILE Home > Th. List > gzcn | GIF version | ||
| Description: A gaussian integer is a complex number. (Contributed by Mario Carneiro, 14-Jul-2014.) |
| Ref | Expression |
|---|---|
| gzcn | ⊢ (𝐴 ∈ ℤ[i] → 𝐴 ∈ ℂ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elgz 13069 | . 2 ⊢ (𝐴 ∈ ℤ[i] ↔ (𝐴 ∈ ℂ ∧ (ℜ‘𝐴) ∈ ℤ ∧ (ℑ‘𝐴) ∈ ℤ)) | |
| 2 | 1 | simp1bi 1039 | 1 ⊢ (𝐴 ∈ ℤ[i] → 𝐴 ∈ ℂ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2203 ‘cfv 5352 ℂcc 8125 ℤcz 9577 ℜcre 11525 ℑcim 11526 ℤ[i]cgz 13067 |
| 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 2214 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-rex 2526 df-rab 2529 df-v 2815 df-un 3215 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-br 4110 df-iota 5312 df-fv 5360 df-gz 13068 |
| This theorem is referenced by: gznegcl 13073 gzcjcl 13074 gzaddcl 13075 gzmulcl 13076 gzsubcl 13078 gzabssqcl 13079 4sqlem4a 13089 4sqlem4 13090 mul4sqlem 13091 mul4sq 13092 4sqlem12 13100 4sqlem17 13105 gzsubrg 14730 2sqlem1 15987 2sqlem2 15988 mul2sq 15989 2sqlem3 15990 |
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