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| Mirrors > Home > MPE Home > Th. List > rprecred | Structured version Visualization version GIF version | ||
| Description: Closure law for reciprocation of positive reals. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| rpred.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
| Ref | Expression |
|---|---|
| rprecred | ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpred.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ+) | |
| 2 | 1 | rpreccld 13181 | . 2 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ+) |
| 3 | 2 | rpred 13171 | 1 ⊢ (𝜑 → (1 / 𝐴) ∈ ℝ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 (class class class)co 7424 ℝcr 11206 1c1 11208 / cdiv 11980 ℝ+crp 13127 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-addrcl 11268 ax-mulcl 11269 ax-mulrcl 11270 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-i2m1 11275 ax-1ne0 11276 ax-1rid 11277 ax-rnegex 11278 ax-rrecex 11279 ax-cnre 11280 ax-pre-lttri 11281 ax-pre-lttrn 11282 ax-pre-ltadd 11283 ax-pre-mulgt0 11284 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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 3739 df-csb 3848 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-er 8725 df-en 8982 df-dom 8983 df-sdom 8984 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-sub 11550 df-neg 11551 df-div 11981 df-rp 13128 |
| This theorem is used by: xov1plusxeqvd 13636 ltexp2r 14323 expnlbnd2 14385 rlimno1 15830 lebnumii 25296 sca2rab 25842 aalioulem4 26671 aalioulem5 26672 dvradcnv 26757 tanregt0 26876 divlogrlim 26972 logccv 27000 cxplt3 27037 asinlem3 27208 rlimcxp 27310 cxp2lim 27313 divsqrtsumlem 27316 logdiflbnd 27331 lgamgulmlem2 27366 lgamgulmlem3 27367 basellem3 27419 dchrisum0lema 27850 dchrisum0lem1 27852 dchrisum0lem2a 27853 mulog2sumlem1 27870 vmalogdivsum2 27874 pntrlog2bndlem2 27914 pntlemd 27930 pntlemr 27938 ostth3 27974 nmcexi 32637 knoppndvlem18 37519 knoppndvlem20 37521 irrapxlem4 43969 irrapxlem5 43970 ioodvbdlimc1lem2 47078 ioodvbdlimc2lem 47080 stoweidlem14 47160 fourierdlem39 47292 pimrecltpos 47854 smfrec 47935 |
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