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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 12915 | . 2 ⊢ 1 ∈ ℝ+ | |
| 2 | rpdivcl 12938 | . 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 2109 (class class class)co 7353 1c1 11029 / cdiv 11795 ℝ+crp 12911 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 ax-pre-mulgt0 11105 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3345 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-po 5531 df-so 5532 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7310 df-ov 7356 df-oprab 7357 df-mpo 7358 df-er 8632 df-en 8880 df-dom 8881 df-sdom 8882 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11367 df-neg 11368 df-div 11796 df-rp 12912 |
| This theorem is referenced by: rpreccld 12965 xlemul1 13210 rpexpcl 14005 rpnnen2lem11 16151 prmreclem6 16851 rpmsubg 21356 lebnumii 24881 nmhmcn 25036 lmnn 25179 advlog 26579 cxprec 26611 dvcxp1 26665 loglesqrt 26687 logrec 26689 rlimcnp 26891 rlimcnp2 26892 rlimcnp3 26893 cxplim 26898 logdifbnd 26920 harmonicbnd4 26937 logfacrlim 27151 dchrmusumlema 27420 mulogsumlem 27458 selberg2lem 27477 pntrsumo1 27492 pntibndlem1 27516 blocnilem 30766 subfacval3 35161 recnnltrp 45357 rpgtrecnn 45360 xrralrecnnle 45363 nnrecrp 45366 sumnnodd 45612 dirkertrigeq 46083 preimageiingt 46702 preimaleiinlt 46703 |
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