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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 822 orddi 825 3anbi123i 1212 an6 1355 xorcom 1430 trubifal 1458 truxortru 1461 truxorfal 1462 falxortru 1463 falxorfal 1464 nford 1613 nfand 1614 sbequ8 1893 sbanv 1936 sban 2006 sbbi 2010 sbnf2 2032 eu1 2102 2exeu 2170 2eu4 2171 sbabel 2399 neanior 2487 rexeqbii 2543 r19.26m 2662 reean 2700 reu5 2749 cbvreuw 2760 reu2 2992 reu3 2994 eqss 3240 unss 3379 ralunb 3386 ssin 3427 undi 3453 difundi 3457 indifdir 3461 inab 3473 difab 3474 reuss2 3485 reupick 3489 raaan 3598 prss 3827 tpss 3839 prsspw 3846 prneimg 3855 uniin 3911 intun 3957 intpr 3958 disjiun 4081 brin 4139 brdif 4140 ssext 4311 pweqb 4313 opthg2 4329 copsex4g 4337 opelopabsb 4352 eqopab2b 4372 pwin 4377 pofun 4407 wetrep 4455 ordwe 4672 wessep 4674 reg3exmidlemwe 4675 elxp3 4778 soinxp 4794 relun 4842 inopab 4860 difopab 4861 inxp 4862 opelco2g 4896 cnvco 4913 dmin 4937 restidsing 5067 intasym 5119 asymref 5120 cnvdif 5141 xpm 5156 xp11m 5173 dfco2 5234 relssdmrn 5255 cnvpom 5277 xpcom 5281 dffun4 5335 dffun4f 5340 funun 5368 funcnveq 5390 fun11 5394 fununi 5395 imadif 5407 imainlem 5408 imain 5409 fnres 5446 fnopabg 5453 fun 5505 fin 5520 dff1o2 5585 brprcneu 5628 fsn 5815 dff1o6 5912 isotr 5952 brabvv 6062 eqoprab2b 6074 fvmpopr2d 6153 dfoprab3 6349 poxp 6392 cnvoprab 6394 f1od2 6395 brtpos2 6412 tfrlem7 6478 dfer2 6698 eqer 6729 iinerm 6771 brecop 6789 eroveu 6790 erovlem 6791 oviec 6805 mapval2 6842 ixpin 6887 modom 6989 xpcomco 7005 xpassen 7009 ssenen 7032 sbthlemi10 7156 infmoti 7218 dfmq0qs 7639 dfplq0qs 7640 enq0enq 7641 enq0tr 7644 npsspw 7681 nqprdisj 7754 ltnqpr 7803 ltnqpri 7804 ltexprlemdisj 7816 addcanprg 7826 recexprlemdisj 7840 caucvgprprlemval 7898 addsrpr 7955 mulsrpr 7956 mulgt0sr 7988 addcnsr 8044 mulcnsr 8045 ltresr 8049 addvalex 8054 axcnre 8091 axpre-suploc 8112 supinfneg 9819 infsupneg 9820 xrnemnf 10002 xrnepnf 10003 elfzuzb 10244 fzass4 10287 infssuzex 10483 hashfacen 11090 rexanre 11771 cbvprod 12109 nnwosdc 12600 isprm3 12680 issubm 13545 issubmd 13547 0subm 13557 insubm 13558 isnsg2 13780 lss1d 14387 tgval2 14765 epttop 14804 cnnei 14946 txuni2 14970 txbas 14972 txdis1cn 14992 xmeterval 15149 dedekindicc 15347 plyun0 15450 lgslem3 15721 vtxd0nedgbfi 16105 wlk1walkdom 16156 clwwlknonccat 16228 clwwlknon2x 16230 bj-stan 16279 nnti 16527 |
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