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| 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 824 orddi 827 3anbi123i 1214 an6 1357 xorcom 1432 trubifal 1460 truxortru 1463 truxorfal 1464 falxortru 1465 falxorfal 1466 nford 1615 nfand 1616 sbequ8 1895 sbanv 1938 sban 2008 sbbi 2012 sbnf2 2034 eu1 2104 2exeu 2172 2eu4 2173 sbabel 2401 neanior 2489 rexeqbii 2545 r19.26m 2664 reean 2702 reu5 2751 cbvreuw 2762 reu2 2994 reu3 2996 eqss 3242 unss 3381 ralunb 3388 ssin 3429 undi 3455 difundi 3459 indifdir 3463 inab 3475 difab 3476 reuss2 3487 reupick 3491 raaan 3600 prss 3829 tpss 3841 prsspw 3848 prneimg 3857 uniin 3913 intun 3959 intpr 3960 disjiun 4083 brin 4141 brdif 4142 ssext 4313 pweqb 4315 opthg2 4331 copsex4g 4339 opelopabsb 4354 eqopab2b 4374 pwin 4379 pofun 4409 wetrep 4457 ordwe 4674 wessep 4676 reg3exmidlemwe 4677 elxp3 4780 soinxp 4796 relun 4844 inopab 4862 difopab 4863 inxp 4864 opelco2g 4898 cnvco 4915 dmin 4939 restidsing 5069 intasym 5121 asymref 5122 cnvdif 5143 xpm 5158 xp11m 5175 dfco2 5236 relssdmrn 5257 cnvpom 5279 xpcom 5283 dffun4 5337 dffun4f 5342 funun 5371 funcnveq 5393 fun11 5397 fununi 5398 imadif 5410 imainlem 5411 imain 5412 fnres 5449 fnopabg 5456 fun 5508 fin 5523 dff1o2 5588 brprcneu 5632 fsn 5819 dff1o6 5916 isotr 5956 brabvv 6066 eqoprab2b 6078 fvmpopr2d 6157 dfoprab3 6353 poxp 6396 cnvoprab 6398 f1od2 6399 brtpos2 6416 tfrlem7 6482 dfer2 6702 eqer 6733 iinerm 6775 brecop 6793 eroveu 6794 erovlem 6795 oviec 6809 mapval2 6846 ixpin 6891 modom 6993 xpcomco 7009 xpassen 7013 ssenen 7036 sbthlemi10 7164 infmoti 7226 dfmq0qs 7648 dfplq0qs 7649 enq0enq 7650 enq0tr 7653 npsspw 7690 nqprdisj 7763 ltnqpr 7812 ltnqpri 7813 ltexprlemdisj 7825 addcanprg 7835 recexprlemdisj 7849 caucvgprprlemval 7907 addsrpr 7964 mulsrpr 7965 mulgt0sr 7997 addcnsr 8053 mulcnsr 8054 ltresr 8058 addvalex 8063 axcnre 8100 axpre-suploc 8121 supinfneg 9828 infsupneg 9829 xrnemnf 10011 xrnepnf 10012 elfzuzb 10253 fzass4 10296 infssuzex 10492 hashfacen 11099 rexanre 11780 cbvprod 12118 nnwosdc 12609 isprm3 12689 issubm 13554 issubmd 13556 0subm 13566 insubm 13567 isnsg2 13789 lss1d 14396 tgval2 14774 epttop 14813 cnnei 14955 txuni2 14979 txbas 14981 txdis1cn 15001 xmeterval 15158 dedekindicc 15356 plyun0 15459 lgslem3 15730 vtxd0nedgbfi 16149 wlk1walkdom 16209 clwwlknonccat 16283 clwwlknon2x 16285 bj-stan 16343 nnti 16591 |
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