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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 13173 | . 2 ⊢ (𝐴 ∈ ℤ[i] ↔ (𝐴 ∈ ℂ ∧ (ℜ‘𝐴) ∈ ℤ ∧ (ℑ‘𝐴) ∈ ℤ)) | |
| 2 | 1 | simp1bi 1043 | 1 ⊢ (𝐴 ∈ ℤ[i] → 𝐴 ∈ ℂ) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ‘cfv 5377 ℂcc 8178 ℤcz 9649 ℜcre 11621 ℑcim 11622 ℤ[i]cgz 13171 |
| 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 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rex 2534 df-rab 2537 df-v 2823 df-un 3224 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-iota 5337 df-fv 5385 df-gz 13172 |
| This theorem is used by: gznegcl 13177 gzcjcl 13178 gzaddcl 13179 gzmulcl 13180 gzsubcl 13182 gzabssqcl 13183 4sqlem4a 13193 4sqlem4 13194 mul4sqlem 13195 mul4sq 13196 4sqlem12 13204 4sqlem17 13209 gzsubrg 15003 2sqlem1 16399 2sqlem2 16400 mul2sq 16401 2sqlem3 16402 |
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