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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 11943 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 ≠ 0) → (1 / 𝐴) ∈ ℝ) | |
| 4 | 1, 2, 3 | syl2anc 596 | 1 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2146 ≠ wne 2961 (class class class)co 7416 ℝcr 11109 0cc0 11110 1c1 11111 / cdiv 11881 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5260 ax-nul 5272 ax-pow 5339 ax-pr 5407 ax-un 7738 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4876 df-br 5113 df-opab 5177 df-mpt 5196 df-id 5559 df-po 5572 df-so 5573 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11453 df-neg 11454 df-div 11882 |
| This theorem is used by: recgt0 12071 prodgt0 12072 ltdiv1 12089 ltrec 12107 lerec 12108 lediv12a 12118 nnrecl 12512 rpnnen1lem5 13015 nnge2recico01 13544 expnlbnd 14280 cnsubrg 21592 evth 25133 ncvs1 25331 reeff1o 26625 rtprmirr 26940 isosctrlem2 26999 chordthmlem2 27013 cxplim 27151 nv1 31042 nmblolbii 31166 norm1 31616 norm1exi 31617 nmbdoplbi 32391 nmcoplbi 32395 nmbdfnlbi 32416 nmcfnlbi 32419 branmfn 32472 strlem1 32617 constrdircl 34168 constrreinvcl 34175 dya2icoseg 34680 logdivsqrle 35050 readvrec2 43154 readvrec 43155 irrapxlem2 43582 irrapxlem5 43585 pell1234qrreccl 43613 pell14qrdich 43628 radcnvrat 45056 hashnzfzclim 45064 reclt0 46138 ltdiv23neg 46141 sumnnodd 46378 ioodvbdlimc1lem2 46678 ioodvbdlimc2lem 46680 stoweidlem7 46753 stoweidlem11 46757 stoweidlem14 46760 stoweidlem25 46771 stoweidlem36 46782 stoweidlem42 46788 stirlinglem10 46829 stirlinglem11 46830 stirlinglem12 46831 fourierdlem40 46893 fourierdlem78 46930 pimrecltpos 47454 pimrecltneg 47470 eenglngeehlnmlem1 49549 |
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