![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
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: ![]() ![]() |
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 386 anass 399 pm5.32 449 jcab 593 notnotnot 624 con2b 659 imnan 680 2false 691 pm5.21nii 694 pm4.8 697 oibabs 704 orcom 718 ioran 742 oridm 747 orbi2i 752 or12 756 pm4.44 769 ordi 806 andi 808 pm4.72 813 stdcndc 831 stdcndcOLD 832 stdcn 833 dcnn 834 pm4.82 935 rnlem 961 3jaob 1281 xoranor 1356 falantru 1382 3impexp 1414 3impexpbicom 1415 alcom 1455 19.26 1458 19.3h 1533 19.3 1534 19.21h 1537 19.43 1608 19.9h 1623 excom 1643 19.41h 1664 19.41 1665 equcom 1683 equsalh 1705 equsex 1707 cbvalh 1727 cbvexh 1729 sbbii 1739 sbh 1750 equs45f 1775 sb6f 1776 sbcof2 1783 sbequ8 1820 sbidm 1824 sb5rf 1825 sb6rf 1826 equvin 1836 sbimv 1866 sbalyz 1975 eu2 2044 eu3h 2045 eu5 2047 mo3h 2053 euan 2056 axext4 2124 cleqh 2240 r19.26 2561 ralcom3 2601 ceqsex 2727 gencbvex 2735 gencbvex2 2736 gencbval 2737 eqvinc 2812 pm13.183 2826 rr19.3v 2827 rr19.28v 2828 reu6 2877 reu3 2878 sbnfc2 3065 difdif 3206 ddifnel 3212 ddifstab 3213 ssddif 3315 difin 3318 uneqin 3332 indifdir 3337 undif3ss 3342 difrab 3355 un00 3414 undifss 3448 ssdifeq0 3450 ralidm 3468 ralf0 3471 ralm 3472 elpr2 3554 snidb 3562 difsnb 3671 preq12b 3705 preqsn 3710 axpweq 4103 exmidn0m 4132 exmidsssn 4133 exmid0el 4135 exmidel 4136 exmidundif 4137 exmidundifim 4138 sspwb 4146 unipw 4147 opm 4164 opth 4167 ssopab2b 4206 elon2 4306 unexb 4371 eusvnfb 4383 eusv2nf 4385 ralxfrALT 4396 uniexb 4402 iunpw 4409 sucelon 4427 unon 4435 sucprcreg 4472 opthreg 4479 ordsuc 4486 dcextest 4503 peano2b 4536 opelxp 4577 opthprc 4598 relop 4697 issetid 4701 xpid11 4770 elres 4863 iss 4873 issref 4929 xpmlem 4967 sqxpeq0 4970 ssrnres 4989 dfrel2 4997 relrelss 5073 fn0 5250 funssxp 5300 f00 5322 f0bi 5323 dffo2 5357 ffoss 5407 f1o00 5410 fo00 5411 fv3 5452 dff2 5572 dffo4 5576 dffo5 5577 fmpt 5578 ffnfv 5586 fsn 5600 fsn2 5602 isores1 5723 ssoprab2b 5836 eqfnov2 5886 cnvoprab 6139 reldmtpos 6158 mapsn 6592 mapsncnv 6597 mptelixpg 6636 elixpsn 6637 ixpsnf1o 6638 en0 6697 en1 6701 dom0 6740 exmidpw 6810 undifdcss 6819 fidcenum 6852 djuexb 6937 ctssdc 7006 exmidomni 7022 exmidfodomr 7077 elni2 7146 ltbtwnnqq 7247 enq0ref 7265 elnp1st2nd 7308 elrealeu 7661 elreal2 7662 le2tri3i 7896 elnn0nn 9043 elnnnn0b 9045 elnnnn0c 9046 elnnz 9088 elnn0z 9091 elnnz1 9101 elz2 9146 eluz2b2 9424 elnn1uz2 9428 elpqb 9468 elioo4g 9747 eluzfz2b 9844 fzm 9849 elfz1end 9866 fzass4 9873 elfz1b 9901 fz01or 9922 nn0fz0 9930 fzolb 9961 fzom 9972 elfzo0 9990 fzo1fzo0n0 9991 elfzo0z 9992 elfzo1 9998 rexanuz 10792 rexuz3 10794 sqrt0rlem 10807 fisum0diag 11242 infssuzex 11678 isprm6 11861 oddpwdclemdc 11887 ennnfone 11974 ctinfom 11977 ctinf 11979 tgclb 12273 xmetunirn 12566 bj-nnsn 13116 bdeq 13192 bdop 13244 bdunexb 13289 bj-2inf 13307 bj-nn0suc 13333 exmidsbth 13394 trirec0 13412 |
Copyright terms: Public domain | W3C validator |