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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 11933 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 ≠ 0) → (1 / 𝐴) ∈ ℝ) | |
| 4 | 1, 2, 3 | syl2anc 595 | 1 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2149 ≠ wne 2964 (class class class)co 7411 ℝcr 11099 0cc0 11100 1c1 11101 / cdiv 11871 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-er 8694 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-div 11872 |
| This theorem is referenced by: recgt0 12061 prodgt0 12062 ltdiv1 12079 ltrec 12097 lerec 12098 lediv12a 12108 nnrecl 12502 rpnnen1lem5 13005 nnge2recico01 13534 expnlbnd 14269 cnsubrg 21546 evth 25087 ncvs1 25285 reeff1o 26576 rtprmirr 26891 isosctrlem2 26950 chordthmlem2 26964 cxplim 27102 nv1 30968 nmblolbii 31092 norm1 31542 norm1exi 31543 nmbdoplbi 32317 nmcoplbi 32321 nmbdfnlbi 32342 nmcfnlbi 32345 branmfn 32398 strlem1 32543 constrdircl 34100 constrreinvcl 34107 dya2icoseg 34612 logdivsqrle 34982 readvrec2 43012 readvrec 43013 irrapxlem2 43442 irrapxlem5 43445 pell1234qrreccl 43473 pell14qrdich 43488 radcnvrat 44916 hashnzfzclim 44924 reclt0 45998 ltdiv23neg 46001 sumnnodd 46238 ioodvbdlimc1lem2 46538 ioodvbdlimc2lem 46540 stoweidlem7 46613 stoweidlem11 46617 stoweidlem14 46620 stoweidlem25 46631 stoweidlem36 46642 stoweidlem42 46648 stirlinglem10 46689 stirlinglem11 46690 stirlinglem12 46691 fourierdlem40 46753 fourierdlem78 46790 pimrecltpos 47314 pimrecltneg 47330 eenglngeehlnmlem1 49402 |
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