| Mathbox for Alexander van der Vekens |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > evenz | Structured version Visualization version GIF version | ||
| Description: An even number is an integer. (Contributed by AV, 14-Jun-2020.) |
| Ref | Expression |
|---|---|
| evenz | ⊢ (𝑍 ∈ Even → 𝑍 ∈ ℤ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iseven 48393 | . 2 ⊢ (𝑍 ∈ Even ↔ (𝑍 ∈ ℤ ∧ (𝑍 / 2) ∈ ℤ)) | |
| 2 | 1 | simplbi 501 | 1 ⊢ (𝑍 ∈ Even → 𝑍 ∈ ℤ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2143 (class class class)co 7410 / cdiv 11866 2c2 12290 ℤcz 12586 Even ceven 48389 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-iota 6492 df-fv 6544 df-ov 7413 df-even 48391 |
| This theorem is referenced by: evenm1odd 48404 evenp1odd 48405 bits0eALTV 48445 opeoALTV 48449 omeoALTV 48451 epoo 48468 emoo 48469 epee 48470 emee 48471 evensumeven 48472 evenltle 48482 even3prm2 48484 mogoldbblem 48485 sbgoldbalt 48546 sgoldbeven3prm 48548 mogoldbb 48550 bgoldbachlt 48578 tgblthelfgott 48580 |
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