| Mathbox for Alexander van der Vekens |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > oddz | Structured version Visualization version GIF version | ||
| Description: An odd number is an integer. (Contributed by AV, 14-Jun-2020.) |
| Ref | Expression |
|---|---|
| oddz | ⊢ (𝑍 ∈ Odd → 𝑍 ∈ ℤ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isodd 48105 | . 2 ⊢ (𝑍 ∈ Odd ↔ (𝑍 ∈ ℤ ∧ ((𝑍 + 1) / 2) ∈ ℤ)) | |
| 2 | 1 | simplbi 496 | 1 ⊢ (𝑍 ∈ Odd → 𝑍 ∈ ℤ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 (class class class)co 7367 1c1 11039 + caddc 11041 / cdiv 11807 2c2 12236 ℤcz 12524 Odd codd 48101 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-iota 6454 df-fv 6506 df-ov 7370 df-odd 48103 |
| This theorem is referenced by: oddm1div2z 48110 oddp1eveni 48117 oddm1eveni 48118 m1expoddALTV 48124 2dvdsoddp1 48132 2dvdsoddm1 48133 zofldiv2ALTV 48138 oddflALTV 48139 gcd2odd1 48144 oexpnegALTV 48153 oexpnegnz 48154 bits0oALTV 48157 opoeALTV 48159 opeoALTV 48160 omoeALTV 48161 omeoALTV 48162 epoo 48179 emoo 48180 stgoldbwt 48252 sbgoldbwt 48253 sbgoldbst 48254 sbgoldbm 48260 bgoldbtbndlem1 48281 bgoldbtbndlem2 48282 bgoldbtbndlem3 48283 bgoldbtbndlem4 48284 bgoldbtbnd 48285 tgoldbach 48293 |
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