| 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 48120 | . 2 ⊢ (𝑍 ∈ Odd ↔ (𝑍 ∈ ℤ ∧ ((𝑍 + 1) / 2) ∈ ℤ)) | |
| 2 | 1 | simplbi 497 | 1 ⊢ (𝑍 ∈ Odd → 𝑍 ∈ ℤ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2119 (class class class)co 7356 1c1 11030 + caddc 11032 / cdiv 11798 2c2 12227 ℤcz 12515 Odd codd 48116 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-iota 6441 df-fv 6493 df-ov 7359 df-odd 48118 |
| This theorem is referenced by: oddm1div2z 48125 oddp1eveni 48132 oddm1eveni 48133 m1expoddALTV 48139 2dvdsoddp1 48147 2dvdsoddm1 48148 zofldiv2ALTV 48153 oddflALTV 48154 gcd2odd1 48159 oexpnegALTV 48168 oexpnegnz 48169 bits0oALTV 48172 opoeALTV 48174 opeoALTV 48175 omoeALTV 48176 omeoALTV 48177 epoo 48194 emoo 48195 stgoldbwt 48267 sbgoldbwt 48268 sbgoldbst 48269 sbgoldbm 48275 bgoldbtbndlem1 48296 bgoldbtbndlem2 48297 bgoldbtbndlem3 48298 bgoldbtbndlem4 48299 bgoldbtbnd 48300 tgoldbach 48308 |
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