| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > anbi12i | GIF version | ||
| Description: Conjoin both sides of two equivalences. (Contributed by NM, 5-Aug-1993.) |
| Ref | Expression |
|---|---|
| anbi12.1 | ⊢ (𝜑 ↔ 𝜓) |
| anbi12.2 | ⊢ (𝜒 ↔ 𝜃) |
| Ref | Expression |
|---|---|
| anbi12i | ⊢ ((𝜑 ∧ 𝜒) ↔ (𝜓 ∧ 𝜃)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | anbi12.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
| 2 | 1 | anbi1i 458 | . 2 ⊢ ((𝜑 ∧ 𝜒) ↔ (𝜓 ∧ 𝜒)) |
| 3 | anbi12.2 | . . 3 ⊢ (𝜒 ↔ 𝜃) | |
| 4 | 3 | anbi2i 457 | . 2 ⊢ ((𝜓 ∧ 𝜒) ↔ (𝜓 ∧ 𝜃)) |
| 5 | 2, 4 | bitri 184 | 1 ⊢ ((𝜑 ∧ 𝜒) ↔ (𝜓 ∧ 𝜃)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: anbi12ci 461 ordir 822 orddi 825 3anbi123i 1212 an6 1355 xorcom 1430 trubifal 1458 truxortru 1461 truxorfal 1462 falxortru 1463 falxorfal 1464 nford 1613 nfand 1614 sbequ8 1893 sbanv 1936 sban 2006 sbbi 2010 sbnf2 2032 eu1 2102 2exeu 2170 2eu4 2171 sbabel 2399 neanior 2487 rexeqbii 2543 r19.26m 2662 reean 2700 reu5 2749 cbvreuw 2760 reu2 2991 reu3 2993 eqss 3239 unss 3378 ralunb 3385 ssin 3426 undi 3452 difundi 3456 indifdir 3460 inab 3472 difab 3473 reuss2 3484 reupick 3488 raaan 3597 prss 3824 tpss 3836 prsspw 3843 prneimg 3852 uniin 3908 intun 3954 intpr 3955 disjiun 4078 brin 4136 brdif 4137 ssext 4307 pweqb 4309 opthg2 4325 copsex4g 4333 opelopabsb 4348 eqopab2b 4368 pwin 4373 pofun 4403 wetrep 4451 ordwe 4668 wessep 4670 reg3exmidlemwe 4671 elxp3 4773 soinxp 4789 relun 4836 inopab 4854 difopab 4855 inxp 4856 opelco2g 4890 cnvco 4907 dmin 4931 restidsing 5061 intasym 5113 asymref 5114 cnvdif 5135 xpm 5150 xp11m 5167 dfco2 5228 relssdmrn 5249 cnvpom 5271 xpcom 5275 dffun4 5329 dffun4f 5334 funun 5362 funcnveq 5384 fun11 5388 fununi 5389 imadif 5401 imainlem 5402 imain 5403 fnres 5440 fnopabg 5447 fun 5499 fin 5514 dff1o2 5579 brprcneu 5622 fsn 5809 dff1o6 5906 isotr 5946 brabvv 6056 eqoprab2b 6068 fvmpopr2d 6147 dfoprab3 6343 poxp 6384 cnvoprab 6386 f1od2 6387 brtpos2 6403 tfrlem7 6469 dfer2 6689 eqer 6720 iinerm 6762 brecop 6780 eroveu 6781 erovlem 6782 oviec 6796 mapval2 6833 ixpin 6878 xpcomco 6993 xpassen 6997 ssenen 7020 sbthlemi10 7144 infmoti 7206 dfmq0qs 7627 dfplq0qs 7628 enq0enq 7629 enq0tr 7632 npsspw 7669 nqprdisj 7742 ltnqpr 7791 ltnqpri 7792 ltexprlemdisj 7804 addcanprg 7814 recexprlemdisj 7828 caucvgprprlemval 7886 addsrpr 7943 mulsrpr 7944 mulgt0sr 7976 addcnsr 8032 mulcnsr 8033 ltresr 8037 addvalex 8042 axcnre 8079 axpre-suploc 8100 supinfneg 9802 infsupneg 9803 xrnemnf 9985 xrnepnf 9986 elfzuzb 10227 fzass4 10270 infssuzex 10465 hashfacen 11071 rexanre 11746 cbvprod 12084 nnwosdc 12575 isprm3 12655 issubm 13520 issubmd 13522 0subm 13532 insubm 13533 isnsg2 13755 lss1d 14362 tgval2 14740 epttop 14779 cnnei 14921 txuni2 14945 txbas 14947 txdis1cn 14967 xmeterval 15124 dedekindicc 15322 plyun0 15425 lgslem3 15696 wlk1walkdom 16100 bj-stan 16166 nnti 16415 |
| Copyright terms: Public domain | W3C validator |