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| Mirrors > Home > MPE Home > Th. List > rpreccl | Structured version Visualization version GIF version | ||
| Description: Closure law for reciprocation of positive reals. (Contributed by Jeff Hankins, 23-Nov-2008.) |
| Ref | Expression |
|---|---|
| rpreccl | ⊢ (𝐴 ∈ ℝ+ → (1 / 𝐴) ∈ ℝ+) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1rp 12886 | . 2 ⊢ 1 ∈ ℝ+ | |
| 2 | rpdivcl 12909 | . 2 ⊢ ((1 ∈ ℝ+ ∧ 𝐴 ∈ ℝ+) → (1 / 𝐴) ∈ ℝ+) | |
| 3 | 1, 2 | mpan 690 | 1 ⊢ (𝐴 ∈ ℝ+ → (1 / 𝐴) ∈ ℝ+) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2110 (class class class)co 7341 1c1 10999 / cdiv 11766 ℝ+crp 12882 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2112 ax-9 2120 ax-10 2143 ax-11 2159 ax-12 2179 ax-ext 2702 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7663 ax-resscn 11055 ax-1cn 11056 ax-icn 11057 ax-addcl 11058 ax-addrcl 11059 ax-mulcl 11060 ax-mulrcl 11061 ax-mulcom 11062 ax-addass 11063 ax-mulass 11064 ax-distr 11065 ax-i2m1 11066 ax-1ne0 11067 ax-1rid 11068 ax-rnegex 11069 ax-rrecex 11070 ax-cnre 11071 ax-pre-lttri 11072 ax-pre-lttrn 11073 ax-pre-ltadd 11074 ax-pre-mulgt0 11075 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3344 df-reu 3345 df-rab 3394 df-v 3436 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-nul 4282 df-if 4474 df-pw 4550 df-sn 4575 df-pr 4577 df-op 4581 df-uni 4858 df-br 5090 df-opab 5152 df-mpt 5171 df-id 5509 df-po 5522 df-so 5523 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-iota 6433 df-fun 6479 df-fn 6480 df-f 6481 df-f1 6482 df-fo 6483 df-f1o 6484 df-fv 6485 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-pnf 11140 df-mnf 11141 df-xr 11142 df-ltxr 11143 df-le 11144 df-sub 11338 df-neg 11339 df-div 11767 df-rp 12883 |
| This theorem is referenced by: rpreccld 12936 xlemul1 13181 rpexpcl 13979 rpnnen2lem11 16125 prmreclem6 16825 rpmsubg 21361 lebnumii 24885 nmhmcn 25040 lmnn 25183 advlog 26583 cxprec 26615 dvcxp1 26669 loglesqrt 26691 logrec 26693 rlimcnp 26895 rlimcnp2 26896 rlimcnp3 26897 cxplim 26902 logdifbnd 26924 harmonicbnd4 26941 logfacrlim 27155 dchrmusumlema 27424 mulogsumlem 27462 selberg2lem 27481 pntrsumo1 27496 pntibndlem1 27520 blocnilem 30774 subfacval3 35201 recnnltrp 45394 rpgtrecnn 45397 xrralrecnnle 45400 nnrecrp 45403 sumnnodd 45649 dirkertrigeq 46118 preimageiingt 46737 preimaleiinlt 46738 |
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