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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 1896 sbanv 1939 sban 2009 sbbi 2013 sbnf2 2035 eu1 2105 2exeu 2173 2eu4 2174 sbabel 2411 neanior 2499 rexeqbii 2555 r19.26m 2674 reean 2712 reu5 2762 cbvreuw 2773 reu2 3005 reu3 3007 eqss 3253 unss 3393 ralunb 3400 ssin 3443 undi 3469 difundi 3473 indifdir 3477 inab 3489 difab 3490 reuss2 3501 reupick 3505 raaan 3615 prss 3850 tpss 3862 prsspw 3869 prneimg 3878 uniin 3934 intun 3980 intpr 3981 disjiun 4104 brin 4162 brdif 4163 ssext 4337 pweqb 4339 opthg2 4355 copsex4g 4363 opelopabsb 4378 eqopab2b 4398 pwin 4403 pofun 4433 wetrep 4481 ordwe 4698 wessep 4700 reg3exmidlemwe 4701 elxp3 4804 soinxp 4820 relun 4869 inopab 4887 difopab 4888 inxp 4889 opelco2g 4923 cnvco 4940 dmin 4964 restidsing 5094 intasym 5147 asymref 5148 cnvdif 5169 xpm 5184 xp11m 5201 dfco2 5262 relssdmrn 5283 cnvpom 5305 xpcom 5309 dffun4 5363 dffun4f 5368 funun 5397 funcnveq 5419 fun11 5423 fununi 5424 imadif 5436 imainlem 5437 imain 5438 fnres 5475 fnopabg 5482 fun 5536 fin 5553 dff1o2 5619 brprcneu 5663 fsn 5849 dff1o6 5949 isotr 5989 brabvv 6099 eqoprab2b 6111 fvmpopr2d 6190 dfoprab3 6385 poxp 6428 cnvoprab 6430 f1od2 6431 brtpos2 6482 tfrlem7 6548 dfer2 6768 eqer 6799 iinerm 6841 brecop 6859 eroveu 6860 erovlem 6861 oviec 6875 mapval2 6912 ixpin 6958 modom 7061 xpcomco 7077 xpassen 7081 ssenen 7105 sbthlemi10 7236 infmoti 7319 dfmq0qs 7744 dfplq0qs 7745 enq0enq 7746 enq0tr 7749 npsspw 7786 nqprdisj 7859 ltnqpr 7908 ltnqpri 7909 ltexprlemdisj 7921 addcanprg 7931 recexprlemdisj 7945 caucvgprprlemval 8003 addsrpr 8060 mulsrpr 8061 mulgt0sr 8093 addcnsr 8149 mulcnsr 8150 ltresr 8154 addvalex 8159 axcnre 8196 axpre-suploc 8217 supinfneg 9927 infsupneg 9928 xrnemnf 10110 xrnepnf 10111 elfzuzb 10353 fzass4 10396 infssuzex 10593 hashfibclem 11206 hashfacen 11208 rexanre 11905 cbvprod 12244 nnwosdc 12735 isprm3 12815 issubm 13685 issubmd 13687 0subm 13697 insubm 13698 isnsg2 13920 lss1d 14531 tgval2 14916 epttop 14955 cnnei 15097 txuni2 15121 txbas 15123 txdis1cn 15143 xmeterval 15300 dedekindicc 15498 plyun0 15601 lgslem3 15875 vtxd0nedgbfi 16294 wlk1walkdom 16354 clwwlknonccat 16428 clwwlknon2x 16430 bj-stan 16519 nnti 16766 |
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