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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 11909 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐴 ≠ 0) → (1 / 𝐴) ∈ ℝ) | |
| 4 | 1, 2, 3 | syl2anc 593 | 1 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2142 ≠ wne 2957 (class class class)co 7396 ℝcr 11072 0cc0 11073 1c1 11074 / cdiv 11844 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-po 5555 df-so 5556 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-div 11845 |
| This theorem is referenced by: recgt0 12037 prodgt0 12038 ltdiv1 12056 ltrec 12074 lerec 12075 lediv12a 12085 nnrecl 12479 rpnnen1lem5 12982 nnge2recico01 13511 expnlbnd 14246 cnsubrg 21479 evth 25021 ncvs1 25219 reeff1o 26510 rtprmirr 26825 isosctrlem2 26884 chordthmlem2 26898 cxplim 27036 nv1 30878 nmblolbii 31002 norm1 31452 norm1exi 31453 nmbdoplbi 32227 nmcoplbi 32231 nmbdfnlbi 32252 nmcfnlbi 32255 branmfn 32308 strlem1 32453 constrdircl 34062 constrreinvcl 34069 dya2icoseg 34574 logdivsqrle 34944 readvrec2 42970 readvrec 42971 irrapxlem2 43400 irrapxlem5 43403 pell1234qrreccl 43431 pell14qrdich 43446 radcnvrat 44890 hashnzfzclim 44898 reclt0 45966 ltdiv23neg 45969 sumnnodd 46206 ioodvbdlimc1lem2 46506 ioodvbdlimc2lem 46508 stoweidlem7 46581 stoweidlem11 46585 stoweidlem14 46588 stoweidlem25 46599 stoweidlem36 46610 stoweidlem42 46616 stirlinglem10 46657 stirlinglem11 46658 stirlinglem12 46659 fourierdlem40 46721 fourierdlem78 46758 pimrecltpos 47282 pimrecltneg 47298 eenglngeehlnmlem1 49359 |
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