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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 11950 | . 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 2960 (class class class)co 7419 ℝcr 11116 0cc0 11117 1c1 11118 / cdiv 11888 |
| 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 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-resscn 11174 ax-1cn 11175 ax-icn 11176 ax-addcl 11177 ax-addrcl 11178 ax-mulcl 11179 ax-mulrcl 11180 ax-mulcom 11181 ax-addass 11182 ax-mulass 11183 ax-distr 11184 ax-i2m1 11185 ax-1ne0 11186 ax-1rid 11187 ax-rnegex 11188 ax-rrecex 11189 ax-cnre 11190 ax-pre-lttri 11191 ax-pre-lttrn 11192 ax-pre-ltadd 11193 ax-pre-mulgt0 11194 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-po 5571 df-so 5572 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 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 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11262 df-mnf 11263 df-xr 11264 df-ltxr 11265 df-le 11266 df-sub 11460 df-neg 11461 df-div 11889 |
| This theorem is used by: recgt0 12078 prodgt0 12079 ltdiv1 12096 ltrec 12114 lerec 12115 lediv12a 12125 nnrecl 12519 rpnnen1lem5 13023 nnge2recico01 13552 expnlbnd 14289 cnsubrg 21629 evth 25171 ncvs1 25369 reeff1o 26663 rtprmirr 26978 isosctrlem2 27037 chordthmlem2 27051 cxplim 27189 nv1 31100 nmblolbii 31224 norm1 31674 norm1exi 31675 nmbdoplbi 32449 nmcoplbi 32453 nmbdfnlbi 32474 nmcfnlbi 32477 branmfn 32530 strlem1 32675 constrdircl 34221 constrreinvcl 34228 dya2icoseg 34734 logdivsqrle 35104 readvrec2 43182 readvrec 43183 irrapxlem2 43610 irrapxlem5 43613 pell1234qrreccl 43641 pell14qrdich 43656 radcnvrat 45084 hashnzfzclim 45092 reclt0 46166 ltdiv23neg 46169 sumnnodd 46406 ioodvbdlimc1lem2 46706 ioodvbdlimc2lem 46708 stoweidlem7 46781 stoweidlem11 46785 stoweidlem14 46788 stoweidlem25 46799 stoweidlem36 46810 stoweidlem42 46816 stirlinglem10 46857 stirlinglem11 46858 stirlinglem12 46859 fourierdlem40 46921 fourierdlem78 46958 pimrecltpos 47482 pimrecltneg 47498 eenglngeehlnmlem1 49576 |
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