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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 11960 | . 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 2145 ≠ wne 2955 (class class class)co 7414 ℝcr 11126 0cc0 11127 1c1 11128 / cdiv 11898 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-div 11899 |
| This theorem is used by: recgt0 12088 prodgt0 12089 ltdiv1 12106 ltrec 12124 lerec 12125 lediv12a 12135 nnrecl 12529 rpnnen1lem5 13034 nnge2recico01 13563 expnlbnd 14300 cnsubrg 21643 evth 25190 ncvs1 25388 reeff1o 26686 rtprmirr 27000 isosctrlem2 27059 chordthmlem2 27073 cxplim 27211 nv1 31159 nmblolbii 31283 norm1 31733 norm1exi 31734 nmbdoplbi 32508 nmcoplbi 32512 nmbdfnlbi 32533 nmcfnlbi 32536 branmfn 32589 strlem1 32734 constrdircl 34278 constrreinvcl 34285 dya2icoseg 34791 logdivsqrle 35161 readvrec2 43239 readvrec 43240 irrapxlem2 43667 irrapxlem5 43670 pell1234qrreccl 43698 pell14qrdich 43713 radcnvrat 45141 hashnzfzclim 45149 reclt0 46223 ltdiv23neg 46226 sumnnodd 46463 ioodvbdlimc1lem2 46763 ioodvbdlimc2lem 46765 stoweidlem7 46838 stoweidlem11 46842 stoweidlem14 46845 stoweidlem25 46856 stoweidlem36 46867 stoweidlem42 46873 stirlinglem10 46914 stirlinglem11 46915 stirlinglem12 46916 fourierdlem40 46978 fourierdlem78 47015 pimrecltpos 47539 pimrecltneg 47555 eenglngeehlnmlem1 49670 |
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