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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 1940 sban 2011 sbbi 2015 sbnf2 2037 eu1 2107 2exeu 2175 2eu4 2176 sbabel 2413 neanior 2501 rexeqbii 2557 r19.26m 2676 reean 2714 reu5 2764 cbvreuw 2775 reu2 3008 reu3 3010 eqss 3257 unss 3397 ralunb 3404 ssin 3447 undi 3473 difundi 3477 indifdir 3481 inab 3493 difab 3494 reuss2 3505 reupick 3509 raaan 3619 prss 3855 tpss 3867 prsspw 3874 prneimg 3883 uniin 3939 intun 3985 intpr 3986 disjiun 4109 brin 4167 brdif 4168 ssext 4342 pweqb 4344 opthg2 4360 copsex4g 4368 opelopabsb 4383 eqopab2b 4403 pwin 4408 pofun 4438 wetrep 4486 ordwe 4703 wessep 4705 reg3exmidlemwe 4706 elxp3 4809 soinxp 4825 relun 4874 inopab 4892 difopab 4893 inxp 4894 opelco2g 4928 cnvco 4945 dmin 4969 restidsing 5099 intasym 5152 asymref 5153 cnvdif 5174 xpm 5189 xp11m 5206 dfco2 5267 relssdmrn 5288 cnvpom 5310 xpcom 5314 dffun4 5368 dffun4f 5373 funun 5402 funcnveq 5424 fun11 5428 fununi 5429 imadif 5441 imainlem 5442 imain 5443 fnres 5480 fnopabg 5487 fun 5541 fin 5558 dff1o2 5624 brprcneu 5668 fsn 5854 dff1o6 5955 isotr 5995 brabvv 6107 eqoprab2b 6119 fvmpopr2d 6198 dfoprab3 6398 poxp 6441 cnvoprab 6443 f1od2 6444 brtpos2 6495 tfrlem7 6561 dfer2 6781 eqer 6812 iinerm 6854 brecop 6872 eroveu 6873 erovlem 6874 oviec 6888 mapval2 6925 ixpin 6971 modom 7074 xpcomco 7090 xpassen 7094 ssenen 7118 sbthlemi10 7249 infmoti 7332 dfmq0qs 7760 dfplq0qs 7761 enq0enq 7762 enq0tr 7765 npsspw 7802 nqprdisj 7875 ltnqpr 7924 ltnqpri 7925 ltexprlemdisj 7937 addcanprg 7947 recexprlemdisj 7961 caucvgprprlemval 8019 addsrpr 8076 mulsrpr 8077 mulgt0sr 8109 addcnsr 8165 mulcnsr 8166 ltresr 8170 addvalex 8175 axcnre 8212 axpre-suploc 8233 supinfneg 9945 infsupneg 9946 xrnemnf 10129 xrnepnf 10130 elfzuzb 10372 fzass4 10417 infssuzex 10615 hashfibclem 11231 hashfacen 11233 rexanre 11930 cbvprod 12269 nnwosdc 12760 isprm3 12840 issubm 13727 issubmd 13729 0subm 13739 insubm 13740 isnsg2 13956 lss1d 14657 tgval2 15042 epttop 15081 cnnei 15223 txuni2 15247 txbas 15249 txdis1cn 15269 xmeterval 15426 dedekindicc 15624 plyun0 15727 lgslem3 16001 vtxd0nedgbfi 16420 wlk1walkdom 16480 clwwlknonccat 16554 clwwlknon2x 16556 bj-stan 16645 nnti 16892 |
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