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Mirrors > Home > MPE Home > Th. List > rereccld | Structured version Visualization version GIF version |
Description: Closure law for reciprocal. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
redivcld.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
rereccld.2 | ⊢ (𝜑 → 𝐴 ≠ 0) |
Ref | Expression |
---|---|
rereccld | ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | redivcld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
2 | rereccld.2 | . 2 ⊢ (𝜑 → 𝐴 ≠ 0) | |
3 | rereccl 11982 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 ≠ 0) → (1 / 𝐴) ∈ ℝ) | |
4 | 1, 2, 3 | syl2anc 584 | 1 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2105 ≠ wne 2937 (class class class)co 7430 ℝcr 11151 0cc0 11152 1c1 11153 / cdiv 11917 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1791 ax-4 1805 ax-5 1907 ax-6 1964 ax-7 2004 ax-8 2107 ax-9 2115 ax-10 2138 ax-11 2154 ax-12 2174 ax-ext 2705 ax-sep 5301 ax-nul 5311 ax-pow 5370 ax-pr 5437 ax-un 7753 ax-resscn 11209 ax-1cn 11210 ax-icn 11211 ax-addcl 11212 ax-addrcl 11213 ax-mulcl 11214 ax-mulrcl 11215 ax-mulcom 11216 ax-addass 11217 ax-mulass 11218 ax-distr 11219 ax-i2m1 11220 ax-1ne0 11221 ax-1rid 11222 ax-rnegex 11223 ax-rrecex 11224 ax-cnre 11225 ax-pre-lttri 11226 ax-pre-lttrn 11227 ax-pre-ltadd 11228 ax-pre-mulgt0 11229 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1539 df-fal 1549 df-ex 1776 df-nf 1780 df-sb 2062 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2726 df-clel 2813 df-nfc 2889 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3377 df-reu 3378 df-rab 3433 df-v 3479 df-sbc 3791 df-csb 3908 df-dif 3965 df-un 3967 df-in 3969 df-ss 3979 df-nul 4339 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4912 df-br 5148 df-opab 5210 df-mpt 5231 df-id 5582 df-po 5596 df-so 5597 df-xp 5694 df-rel 5695 df-cnv 5696 df-co 5697 df-dm 5698 df-rn 5699 df-res 5700 df-ima 5701 df-iota 6515 df-fun 6564 df-fn 6565 df-f 6566 df-f1 6567 df-fo 6568 df-f1o 6569 df-fv 6570 df-riota 7387 df-ov 7433 df-oprab 7434 df-mpo 7435 df-er 8743 df-en 8984 df-dom 8985 df-sdom 8986 df-pnf 11294 df-mnf 11295 df-xr 11296 df-ltxr 11297 df-le 11298 df-sub 11491 df-neg 11492 df-div 11918 |
This theorem is referenced by: recgt0 12110 prodgt0 12111 ltdiv1 12129 ltrec 12147 lerec 12148 lediv12a 12158 nnrecl 12521 rpnnen1lem5 13020 expnlbnd 14268 cnsubrg 21462 evth 25004 ncvs1 25204 reeff1o 26505 rtprmirr 26817 isosctrlem2 26876 chordthmlem2 26890 cxplim 27029 nv1 30703 nmblolbii 30827 norm1 31277 norm1exi 31278 nmbdoplbi 32052 nmcoplbi 32056 nmbdfnlbi 32077 nmcfnlbi 32080 branmfn 32133 strlem1 32278 dya2icoseg 34258 logdivsqrle 34643 readvrec2 42369 readvrec 42370 irrapxlem2 42810 irrapxlem5 42813 pell1234qrreccl 42841 pell14qrdich 42856 radcnvrat 44309 hashnzfzclim 44317 reclt0 45340 ltdiv23neg 45343 sumnnodd 45585 ioodvbdlimc1lem2 45887 ioodvbdlimc2lem 45889 stoweidlem7 45962 stoweidlem11 45966 stoweidlem14 45969 stoweidlem25 45980 stoweidlem36 45991 stoweidlem42 45997 stirlinglem10 46038 stirlinglem11 46039 stirlinglem12 46040 fourierdlem40 46102 fourierdlem78 46139 pimrecltpos 46663 pimrecltneg 46679 eenglngeehlnmlem1 48586 |
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