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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 40080 | . 2 ⊢ (𝑍 ∈ Odd ↔ (𝑍 ∈ ℤ ∧ ((𝑍 + 1) / 2) ∈ ℤ)) | |
2 | 1 | simplbi 475 | 1 ⊢ (𝑍 ∈ Odd → 𝑍 ∈ ℤ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 1977 (class class class)co 6549 1c1 9816 + caddc 9818 / cdiv 10563 2c2 10947 ℤcz 11254 Odd codd 40076 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-rex 2902 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-iota 5768 df-fv 5812 df-ov 6552 df-odd 40078 |
This theorem is referenced by: oddm1div2z 40085 oddp1eveni 40092 oddm1eveni 40093 m1expoddALTV 40099 2dvdsoddp1 40106 2dvdsoddm1 40107 zofldiv2ALTV 40112 oddflALTV 40113 oexpnegALTV 40126 oexpnegnz 40127 bits0oALTV 40130 opoeALTV 40132 opeoALTV 40133 omoeALTV 40134 omeoALTV 40135 epoo 40150 emoo 40151 stgoldbwt 40198 bgoldbwt 40199 bgoldbst 40200 bgoldbtbndlem1 40221 bgoldbtbndlem2 40222 bgoldbtbndlem3 40223 bgoldbtbndlem4 40224 bgoldbtbnd 40225 tgoldbach 40232 tgoldbachOLD 40239 |
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