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Mirrors > Home > MPE Home > Th. List > rphalfcl | Structured version Visualization version GIF version |
Description: Closure law for half of a positive real. (Contributed by Mario Carneiro, 31-Jan-2014.) |
Ref | Expression |
---|---|
rphalfcl | ⊢ (𝐴 ∈ ℝ+ → (𝐴 / 2) ∈ ℝ+) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2rp 11837 | . 2 ⊢ 2 ∈ ℝ+ | |
2 | rpdivcl 11856 | . 2 ⊢ ((𝐴 ∈ ℝ+ ∧ 2 ∈ ℝ+) → (𝐴 / 2) ∈ ℝ+) | |
3 | 1, 2 | mpan2 707 | 1 ⊢ (𝐴 ∈ ℝ+ → (𝐴 / 2) ∈ ℝ+) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 1990 (class class class)co 6650 / cdiv 10684 2c2 11070 ℝ+crp 11832 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-po 5035 df-so 5036 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-div 10685 df-2 11079 df-rp 11833 |
This theorem is referenced by: rphalfcld 11884 rpltrp 12171 cau3lem 14094 2clim 14303 addcn2 14324 mulcn2 14326 climcau 14401 metcnpi3 22351 ngptgp 22440 iccntr 22624 reconnlem2 22630 opnreen 22634 xmetdcn2 22640 cnllycmp 22755 iscfil3 23071 cfilfcls 23072 iscmet3lem3 23088 iscmet3lem1 23089 iscmet3lem2 23090 iscmet3 23091 lmcau 23111 bcthlem5 23125 ivthlem2 23221 uniioombl 23357 dvcnvre 23782 aaliou 24093 ulmcaulem 24148 ulmcau 24149 ulmcn 24153 ulmdvlem3 24156 tanregt0 24285 argregt0 24356 argrege0 24357 logimul 24360 resqrtcn 24490 asin1 24621 reasinsin 24623 atanbnd 24653 atan1 24655 sqrtlim 24699 basellem4 24810 chpchtlim 25168 mulog2sumlem2 25224 pntlem3 25298 vacn 27549 ubthlem1 27726 nmcexi 28885 poimirlem29 33438 heicant 33444 ftc1anclem6 33490 ftc1anclem7 33491 ftc1anc 33493 heibor1lem 33608 heiborlem8 33617 bfplem2 33622 supxrge 39554 suplesup 39555 infleinflem1 39586 infleinf 39588 addlimc 39880 fourierdlem103 40426 fourierdlem104 40427 sge0xaddlem2 40651 smflimlem4 40982 |
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