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| Mirrors > Home > ILE Home > Th. List > igz | GIF version | ||
| Description: i is a gaussian integer. (Contributed by Mario Carneiro, 14-Jul-2014.) |
| Ref | Expression |
|---|---|
| igz | ⊢ i ∈ ℤ[i] |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-icn 8170 | . 2 ⊢ i ∈ ℂ | |
| 2 | rei 11522 | . . 3 ⊢ (ℜ‘i) = 0 | |
| 3 | 0z 9534 | . . 3 ⊢ 0 ∈ ℤ | |
| 4 | 2, 3 | eqeltri 2304 | . 2 ⊢ (ℜ‘i) ∈ ℤ |
| 5 | imi 11523 | . . 3 ⊢ (ℑ‘i) = 1 | |
| 6 | 1z 9549 | . . 3 ⊢ 1 ∈ ℤ | |
| 7 | 5, 6 | eqeltri 2304 | . 2 ⊢ (ℑ‘i) ∈ ℤ |
| 8 | elgz 13007 | . 2 ⊢ (i ∈ ℤ[i] ↔ (i ∈ ℂ ∧ (ℜ‘i) ∈ ℤ ∧ (ℑ‘i) ∈ ℤ)) | |
| 9 | 1, 4, 7, 8 | mpbir3an 1206 | 1 ⊢ i ∈ ℤ[i] |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 ‘cfv 5333 ℂcc 8073 0cc0 8075 1c1 8076 ici 8077 ℤcz 9523 ℜcre 11463 ℑcim 11464 ℤ[i]cgz 13005 |
| 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-in1 619 ax-in2 620 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-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulrcl 8174 ax-addcom 8175 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-1rid 8182 ax-0id 8183 ax-rnegex 8184 ax-precex 8185 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-apti 8190 ax-pre-ltadd 8191 ax-pre-mulgt0 8192 ax-pre-mulext 8193 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-po 4399 df-iso 4400 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-pnf 8258 df-mnf 8259 df-xr 8260 df-ltxr 8261 df-le 8262 df-sub 8394 df-neg 8395 df-reap 8797 df-ap 8804 df-div 8895 df-inn 9186 df-2 9244 df-z 9524 df-cj 11465 df-re 11466 df-im 11467 df-gz 13006 |
| This theorem is referenced by: gzreim 13015 |
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