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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 44147 | . 2 ⊢ (𝑍 ∈ Odd ↔ (𝑍 ∈ ℤ ∧ ((𝑍 + 1) / 2) ∈ ℤ)) | |
2 | 1 | simplbi 501 | 1 ⊢ (𝑍 ∈ Odd → 𝑍 ∈ ℤ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2111 (class class class)co 7135 1c1 10527 + caddc 10529 / cdiv 11286 2c2 11680 ℤcz 11969 Odd codd 44143 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-rab 3115 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-iota 6283 df-fv 6332 df-ov 7138 df-odd 44145 |
This theorem is referenced by: oddm1div2z 44152 oddp1eveni 44159 oddm1eveni 44160 m1expoddALTV 44166 2dvdsoddp1 44174 2dvdsoddm1 44175 zofldiv2ALTV 44180 oddflALTV 44181 gcd2odd1 44186 oexpnegALTV 44195 oexpnegnz 44196 bits0oALTV 44199 opoeALTV 44201 opeoALTV 44202 omoeALTV 44203 omeoALTV 44204 epoo 44221 emoo 44222 stgoldbwt 44294 sbgoldbwt 44295 sbgoldbst 44296 sbgoldbm 44302 bgoldbtbndlem1 44323 bgoldbtbndlem2 44324 bgoldbtbndlem3 44325 bgoldbtbndlem4 44326 bgoldbtbnd 44327 tgoldbach 44335 |
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