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Mirrors > Home > ILE Home > Th. List > impbii | Unicode version |
Description: Infer an equivalence from an implication and its converse. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
impbii.1 | |
impbii.2 |
Ref | Expression |
---|---|
impbii |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | impbii.1 | . 2 | |
2 | impbii.2 | . 2 | |
3 | bi3 118 | . 2 | |
4 | 1, 2, 3 | mp2 16 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: bicom 139 biid 170 2th 173 pm5.74 178 bitri 183 bibi2i 226 bi2.04 247 pm5.4 248 imdi 249 impexp 261 ancom 264 pm4.45im 332 dfbi2 385 anass 398 pm5.32 448 jcab 592 notnotnot 623 con2b 658 imnan 679 2false 690 pm5.21nii 693 pm4.8 696 oibabs 703 orcom 717 ioran 741 oridm 746 orbi2i 751 or12 755 pm4.44 768 ordi 805 andi 807 pm4.72 812 stdcndc 830 stdcndcOLD 831 stdcn 832 dcnn 833 pm4.82 934 rnlem 960 3jaob 1280 xoranor 1355 falantru 1381 3impexp 1413 3impexpbicom 1414 alcom 1454 19.26 1457 19.3h 1532 19.3 1533 19.21h 1536 19.43 1607 19.9h 1622 excom 1642 19.41h 1663 19.41 1664 equcom 1682 equsalh 1704 equsex 1706 cbvalh 1726 cbvexh 1728 sbbii 1738 sbh 1749 equs45f 1774 sb6f 1775 sbcof2 1782 sbequ8 1819 sbidm 1823 sb5rf 1824 sb6rf 1825 equvin 1835 sbimv 1865 sbalyz 1974 eu2 2043 eu3h 2044 eu5 2046 mo3h 2052 euan 2055 axext4 2123 cleqh 2239 r19.26 2558 ralcom3 2598 ceqsex 2724 gencbvex 2732 gencbvex2 2733 gencbval 2734 eqvinc 2808 pm13.183 2822 rr19.3v 2823 rr19.28v 2824 reu6 2873 reu3 2874 sbnfc2 3060 difdif 3201 ddifnel 3207 ddifstab 3208 ssddif 3310 difin 3313 uneqin 3327 indifdir 3332 undif3ss 3337 difrab 3350 un00 3409 undifss 3443 ssdifeq0 3445 ralidm 3463 ralf0 3466 ralm 3467 elpr2 3549 snidb 3555 difsnb 3663 preq12b 3697 preqsn 3702 axpweq 4095 exmidn0m 4124 exmidsssn 4125 exmid0el 4127 exmidel 4128 exmidundif 4129 exmidundifim 4130 sspwb 4138 unipw 4139 opm 4156 opth 4159 ssopab2b 4198 elon2 4298 unexb 4363 eusvnfb 4375 eusv2nf 4377 ralxfrALT 4388 uniexb 4394 iunpw 4401 sucelon 4419 unon 4427 sucprcreg 4464 opthreg 4471 ordsuc 4478 dcextest 4495 peano2b 4528 opelxp 4569 opthprc 4590 relop 4689 issetid 4693 xpid11 4762 elres 4855 iss 4865 issref 4921 xpmlem 4959 sqxpeq0 4962 ssrnres 4981 dfrel2 4989 relrelss 5065 fn0 5242 funssxp 5292 f00 5314 f0bi 5315 dffo2 5349 ffoss 5399 f1o00 5402 fo00 5403 fv3 5444 dff2 5564 dffo4 5568 dffo5 5569 fmpt 5570 ffnfv 5578 fsn 5592 fsn2 5594 isores1 5715 ssoprab2b 5828 eqfnov2 5878 cnvoprab 6131 reldmtpos 6150 mapsn 6584 mapsncnv 6589 mptelixpg 6628 elixpsn 6629 ixpsnf1o 6630 en0 6689 en1 6693 dom0 6732 exmidpw 6802 undifdcss 6811 fidcenum 6844 djuexb 6929 ctssdc 6998 exmidomni 7014 exmidfodomr 7060 elni2 7122 ltbtwnnqq 7223 enq0ref 7241 elnp1st2nd 7284 elrealeu 7637 elreal2 7638 le2tri3i 7872 elnn0nn 9019 elnnnn0b 9021 elnnnn0c 9022 elnnz 9064 elnn0z 9067 elnnz1 9077 elz2 9122 eluz2b2 9397 elnn1uz2 9401 elioo4g 9717 eluzfz2b 9813 fzm 9818 elfz1end 9835 fzass4 9842 elfz1b 9870 fz01or 9891 nn0fz0 9899 fzolb 9930 fzom 9941 elfzo0 9959 fzo1fzo0n0 9960 elfzo0z 9961 elfzo1 9967 rexanuz 10760 rexuz3 10762 sqrt0rlem 10775 fisum0diag 11210 infssuzex 11642 isprm6 11825 oddpwdclemdc 11851 ennnfone 11938 ctinfom 11941 ctinf 11943 tgclb 12234 xmetunirn 12527 bj-nnsn 12945 bdeq 13021 bdop 13073 bdunexb 13118 bj-2inf 13136 bj-nn0suc 13162 exmidsbth 13219 |
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