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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 11873 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 ≠ 0) → (1 / 𝐴) ∈ ℝ) | |
| 4 | 1, 2, 3 | syl2anc 585 | 1 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 ≠ wne 2932 (class class class)co 7367 ℝcr 11037 0cc0 11038 1c1 11039 / cdiv 11807 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-po 5539 df-so 5540 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 |
| This theorem is referenced by: recgt0 12001 prodgt0 12002 ltdiv1 12020 ltrec 12038 lerec 12039 lediv12a 12049 nnrecl 12435 rpnnen1lem5 12931 nnge2recico01 13460 expnlbnd 14195 cnsubrg 21407 evth 24926 ncvs1 25124 reeff1o 26412 rtprmirr 26724 isosctrlem2 26783 chordthmlem2 26797 cxplim 26935 nv1 30746 nmblolbii 30870 norm1 31320 norm1exi 31321 nmbdoplbi 32095 nmcoplbi 32099 nmbdfnlbi 32120 nmcfnlbi 32123 branmfn 32176 strlem1 32321 constrdircl 33909 constrreinvcl 33916 dya2icoseg 34421 logdivsqrle 34794 readvrec2 42793 readvrec 42794 irrapxlem2 43251 irrapxlem5 43254 pell1234qrreccl 43282 pell14qrdich 43297 radcnvrat 44741 hashnzfzclim 44749 reclt0 45820 ltdiv23neg 45823 sumnnodd 46060 ioodvbdlimc1lem2 46360 ioodvbdlimc2lem 46362 stoweidlem7 46435 stoweidlem11 46439 stoweidlem14 46442 stoweidlem25 46453 stoweidlem36 46464 stoweidlem42 46470 stirlinglem10 46511 stirlinglem11 46512 stirlinglem12 46513 fourierdlem40 46575 fourierdlem78 46612 pimrecltpos 47136 pimrecltneg 47152 eenglngeehlnmlem1 49213 |
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