| Metamath Proof Explorer |
< Previous
Next >
Related theorems GIF version |
| Description: Deduction joining two equivalences to form equivalence of implications. |
| Ref | Expression |
|---|---|
| bi2d.1 | ⊢ (φ → (ψ ↔ χ)) |
| bi2d.2 | ⊢ (φ → (θ ↔ τ)) |
| Ref | Expression |
|---|---|
| imbi12d | ⊢ (φ → ((ψ → θ) ↔ (χ → τ))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bi2d.1 | . . 3 ⊢ (φ → (ψ ↔ χ)) | |
| 2 | 1 | imbi1d 465 | . 2 ⊢ (φ → ((ψ → θ) ↔ (χ → θ))) |
| 3 | bi2d.2 | . . 3 ⊢ (φ → (θ ↔ τ)) | |
| 4 | 3 | imbi2d 464 | . 2 ⊢ (φ → ((χ → θ) ↔ (χ → τ))) |
| 5 | 2, 4 | bitrd 406 | 1 ⊢ (φ → ((ψ → θ) ↔ (χ → τ))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 |
| This theorem is referenced by: hbsb4t 906 bimod 1030 axpow 1082 axinf 1084 zfext2 1087 hblem 1170 ralcom2 1314 cbvralf 1330 vtoclga 1387 rcla4v 1402 ceqex 1410 sbcim 1460 dfss2f 1499 rext 1862 copsexg 1902 reuuni2 1956 elinti 1974 elintab 1976 intss1 1979 intmin 1982 ssiun2s 2020 trel 2048 trss 2050 ssopab2 2119 poeq1 2130 pocl 2132 so 2152 supmo 2156 suplub 2161 fri 2170 frc 2172 efrirr 2180 ordelord 2221 tfis 2245 limsuc 2361 dfom2 2374 limomss 2378 nnlim 2385 findsg 2398 findes 2400 tfindsg 2402 tfindsg2 2403 tfindes 2404 vtoclr 2449 ralxp 2456 fneu 2728 tz6.12f 2844 tz6.12i 2847 funbrfv 2852 funopfvg 2854 fnfvbr 2855 fvelima 2859 fvrn 2888 f1fvf 2917 f1fveq 2918 isofrlem 2939 f1oweOLD 2944 tfrlem1 2949 rdglimt 2986 tz7.48lem 2993 tz7.49 2997 caoprcan 3069 oawordeu 3157 omordi 3164 omsmolem 3195 ersym 3209 ertr 3211 ecopoprtrn 3247 th3qlem2 3251 ensymg 3316 sbth 3359 limensuc 3402 nneneq 3408 php 3409 php2 3410 pssnn 3428 fiint 3445 zfregcl 3446 inf0 3457 inf3lem1 3464 inf4 3473 dfom3 3477 elom3 3478 setind 3492 r1ord 3499 rankun 3535 bnd2 3549 aceq3lem 3555 aceq5lem4 3561 aceq5 3563 aceq6b 3565 kmlem1 3580 kmlem4 3583 kmlem9 3588 kmlem11 3590 kmlem12 3591 numthlem 3598 zornlem7 3609 fodomg 3614 unxpdom 3650 sucxpdom 3652 alephordi 3679 axrepndlem1 3738 axrepndlem2 3739 axunndlem1 3741 axunnd 3742 axpowndlem2 3744 axpowndlem3 3745 axpowndlem4 3746 axregndlem2 3749 axregnd 3750 axinfndlem1 3751 axinfnd 3752 axacndlem4 3756 axacndlem5 3757 axacnd 3758 zfcndpow 3762 zfcndinf 3764 indpi 3828 ltsopq 3869 ltexpq 3874 prcdpq 3891 prnmax 3893 ltsopr 3930 prlem934a 3931 ltsosr 3997 recexsrlem 4006 mulgt0sr 4008 map2psrpr 4014 suppsrlem 4015 suppsr 4016 suppsr2 4017 supsrlem6 4024 supre 4054 ltsor 4055 axrecex 4079 axrrecex 4081 axmulgt0 4086 mulcant2 4209 divmult 4220 divclt 4223 divcan1t 4228 divcan2t 4229 recidt 4235 divrect 4238 divdistrt 4246 divcan3t 4251 redivclt 4276 gt0ne0t 4346 lt2addt 4361 addge0t 4362 mulge0t 4375 ltsqt 4376 recgt0t 4401 divgt0t 4402 divge0t 4403 ltdivt 4404 ltmuldivt 4406 ltrect 4417 lerect 4418 ltdiv23t 4419 le2sqt 4420 peano5nn 4424 peano2nn 4433 nnleltp1t 4448 nnsub 4450 nnunb 4520 crut 4531 uzind 4603 nnwof 4609 zmax 4618 zbtwnre 4619 om2uzlt 4654 sqe11t 4705 lt2sqet 4706 sqrlem6 4736 sqrlem12 4742 sqrclt 4767 sqrgt0t 4768 sqrge0t 4769 sqr00t 4770 sqsqrt 4776 sqr2irrlem2 4778 sqr2irrlem3 4779 absidt 4862 abs3lemt 4865 climunii 4883 ruclem25 4909 ruclem32 4916 normpytht 5092 norm3lemt 5097 closedsub 5128 chlim 5139 hlimcaui 5141 hlimunii 5143 ch2 5149 chcompl 5150 occllem6 5185 occllem8 5187 projlem1 5193 projlem20 5212 projlem28 5220 projlem29 5221 omlsi 5250 h1de2 5458 elspansn2t 5472 h1datomt 5484 pjoml3t 5517 spansncvt 5543 pjcjt2 5580 pjssge0t 5636 pjopytht 5662 stjt 5676 str 5698 stcltr1 5707 mdbr 5726 mdi 5727 mdbr3 5729 mdbr4 5730 dmdbr 5731 dmdi 5732 atss 5744 atom1d 5750 chcv1t 5751 atcvat2t 5773 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 |
| This theorem depends on definitions: df-bi 128 df-an 198 |