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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 462 | . 2 ⊢ ((𝜑 ∧ 𝜒) ↔ (𝜓 ∧ 𝜒)) |
| 3 | anbi12.2 | . . 3 ⊢ (𝜒 ↔ 𝜃) | |
| 4 | 3 | anbi2i 461 | . 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 465 ordir 829 orddi 832 3anbi123i 1219 an6 1362 xorcom 1437 trubifal 1465 truxortru 1468 truxorfal 1469 falxortru 1470 falxorfal 1471 nford 1620 nfand 1621 sbequ8 1900 sbanv 1944 sban 2015 sbbi 2019 sbnf2 2041 eu1 2111 2exeu 2179 2eu4 2180 sbabel 2419 neanior 2507 rexeqbii 2563 r19.26m 2682 reean 2720 reu5 2770 cbvreuw 2781 reu2 3014 reu3 3016 eqss 3263 unss 3403 ralunb 3410 ssin 3453 undi 3479 difundi 3483 indifdir 3487 inab 3499 difab 3500 reuss2 3513 reupick 3517 raaan 3630 prss 3866 tpss 3878 prsspw 3885 prneimg 3894 uniin 3950 intun 3996 intpr 3997 disjiun 4120 brin 4178 brdif 4179 ssext 4356 pweqb 4358 opthg2 4374 copsex4g 4382 opelopabsb 4397 eqopab2b 4417 pwin 4422 pofun 4452 wetrep 4500 ordwe 4718 wessep 4720 reg3exmidlemwe 4721 elxp3 4824 soinxp 4840 relun 4889 inopab 4907 difopab 4908 inxp 4909 opelco2g 4943 cnvco 4960 dmin 4984 restidsing 5114 intasym 5167 asymref 5168 cnvdif 5189 xpm 5204 xp11m 5221 dfco2 5282 relssdmrn 5303 cnvpom 5325 xpcom 5329 dffun4 5383 dffun4f 5388 funun 5417 funcnveq 5439 fun11 5443 fununi 5444 imadif 5456 imainlem 5457 imain 5458 fnres 5495 fnopabg 5502 fun 5556 fin 5573 dff1o2 5639 brprcneu 5683 fsn 5871 dff1o6 5972 isotr 6012 brabvv 6124 eqoprab2b 6136 fvmpopr2d 6215 dfoprab3 6415 poxp 6458 cnvoprab 6460 f1od2 6461 brtpos2 6512 tfrlem7 6578 dfer2 6798 eqer 6829 iinerm 6871 brecop 6889 eroveu 6890 erovlem 6891 oviec 6905 mapval2 6949 ixpin 6995 modom 7098 xpcomco 7114 xpassen 7118 ssenen 7142 sbthlemi10 7273 infmoti 7358 dfmq0qs 7786 dfplq0qs 7787 enq0enq 7788 enq0tr 7791 npsspw 7828 nqprdisj 7901 ltnqpr 7950 ltnqpri 7951 ltexprlemdisj 7963 addcanprg 7973 recexprlemdisj 7987 caucvgprprlemval 8045 addsrpr 8102 mulsrpr 8103 mulgt0sr 8135 addcnsr 8191 mulcnsr 8192 ltresr 8196 addvalex 8201 axcnre 8238 axpre-suploc 8259 supinfneg 9974 infsupneg 9975 xrnemnf 10158 xrnepnf 10159 elfzuzb 10401 fzass4 10446 infssuzex 10644 hashfibclem 11260 hashfacen 11262 rexanre 11964 cbvprod 12303 nnwosdc 12794 isprm3 12874 issubm 13756 issubmd 13758 0subm 13768 insubm 13769 isnsg2 13983 lss1d 14692 tgval2 15075 epttop 15114 cnnei 15256 txuni2 15280 txbas 15282 txdis1cn 15302 xmeterval 15459 dedekindicc 15657 plyun0 15760 lgslem3 16035 vtxd0nedgbfi 16454 wlk1walkdom 16514 clwwlknonccat 16588 clwwlknon2x 16590 bj-stan 16689 nnti 16936 |
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