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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 825 orddi 828 3anbi123i 1215 an6 1358 xorcom 1433 trubifal 1461 truxortru 1464 truxorfal 1465 falxortru 1466 falxorfal 1467 nford 1616 nfand 1617 sbequ8 1895 sbanv 1938 sban 2008 sbbi 2012 sbnf2 2034 eu1 2104 2exeu 2172 2eu4 2173 sbabel 2402 neanior 2490 rexeqbii 2546 r19.26m 2665 reean 2703 reu5 2752 cbvreuw 2763 reu2 2995 reu3 2997 eqss 3243 unss 3383 ralunb 3390 ssin 3431 undi 3457 difundi 3461 indifdir 3465 inab 3477 difab 3478 reuss2 3489 reupick 3493 raaan 3602 prss 3834 tpss 3846 prsspw 3853 prneimg 3862 uniin 3918 intun 3964 intpr 3965 disjiun 4088 brin 4146 brdif 4147 ssext 4319 pweqb 4321 opthg2 4337 copsex4g 4345 opelopabsb 4360 eqopab2b 4380 pwin 4385 pofun 4415 wetrep 4463 ordwe 4680 wessep 4682 reg3exmidlemwe 4683 elxp3 4786 soinxp 4802 relun 4850 inopab 4868 difopab 4869 inxp 4870 opelco2g 4904 cnvco 4921 dmin 4945 restidsing 5075 intasym 5128 asymref 5129 cnvdif 5150 xpm 5165 xp11m 5182 dfco2 5243 relssdmrn 5264 cnvpom 5286 xpcom 5290 dffun4 5344 dffun4f 5349 funun 5378 funcnveq 5400 fun11 5404 fununi 5405 imadif 5417 imainlem 5418 imain 5419 fnres 5456 fnopabg 5463 fun 5516 fin 5531 dff1o2 5597 brprcneu 5641 fsn 5827 dff1o6 5927 isotr 5967 brabvv 6077 eqoprab2b 6089 fvmpopr2d 6168 dfoprab3 6363 poxp 6406 cnvoprab 6408 f1od2 6409 brtpos2 6460 tfrlem7 6526 dfer2 6746 eqer 6777 iinerm 6819 brecop 6837 eroveu 6838 erovlem 6839 oviec 6853 mapval2 6890 ixpin 6935 modom 7037 xpcomco 7053 xpassen 7057 ssenen 7080 sbthlemi10 7208 infmoti 7270 dfmq0qs 7692 dfplq0qs 7693 enq0enq 7694 enq0tr 7697 npsspw 7734 nqprdisj 7807 ltnqpr 7856 ltnqpri 7857 ltexprlemdisj 7869 addcanprg 7879 recexprlemdisj 7893 caucvgprprlemval 7951 addsrpr 8008 mulsrpr 8009 mulgt0sr 8041 addcnsr 8097 mulcnsr 8098 ltresr 8102 addvalex 8107 axcnre 8144 axpre-suploc 8165 supinfneg 9873 infsupneg 9874 xrnemnf 10056 xrnepnf 10057 elfzuzb 10299 fzass4 10342 infssuzex 10539 hashfacen 11146 rexanre 11843 cbvprod 12182 nnwosdc 12673 isprm3 12753 issubm 13618 issubmd 13620 0subm 13630 insubm 13631 isnsg2 13853 lss1d 14462 tgval2 14845 epttop 14884 cnnei 15026 txuni2 15050 txbas 15052 txdis1cn 15072 xmeterval 15229 dedekindicc 15427 plyun0 15530 lgslem3 15804 vtxd0nedgbfi 16223 wlk1walkdom 16283 clwwlknonccat 16357 clwwlknon2x 16359 bj-stan 16448 nnti 16695 |
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