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| Description: Introduce a consequent to both sides of a logical equivalence. |
| Ref | Expression |
|---|---|
| bi.a |
|
| Ref | Expression |
|---|---|
| imbi1i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bi.a |
. . . 4
| |
| 2 | 1 | biimpri 150 |
. . 3
|
| 3 | 2 | imim1i 16 |
. 2
|
| 4 | 1 | biimpi 149 |
. . 3
|
| 5 | 4 | imim1i 16 |
. 2
|
| 6 | 3, 5 | impbii 155 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: imbi12i 186 imor 232 impexp 345 pm4.78 352 bibi2i 611 19.37 1116 dfsb3 1263 sbor 1272 sb19.21 1273 a12lem2 1416 mo4f 1441 2mos 1488 neor 1684 r3al 1736 r19.23v 1787 ralcom 1820 reu2 1976 rmo4 1979 sbc2ie 2036 unss 2256 inssdif0 2386 ssundif 2398 dfif2 2417 pwss 2466 ralpr 2486 ralsng 2489 sbcsng 2490 snss 2525 unissb 2595 ssintab 2617 intun 2629 intpr 2630 dfiin2 2656 iunss 2659 dftr2 2756 axpweq 2817 zfpow 2819 axpow2 2820 pwex 2823 zfun 3090 uniex2 3092 dfom2 3220 asymref2 3532 dffun2 3631 dffun4 3633 dffun5 3634 dffun7 3644 fununi 3668 funcnvuni 3669 dff13 3988 ac6sfi 4591 fiint 4703 setind2 4795 ranksn 4835 scottexs 4864 scott0s 4865 kardex 4871 karden 4872 kmlem4 4914 kmlem12 4922 axpowndlem3 5105 zfcndun 5121 zfcndpow 5122 zfcndac 5125 suppsr3 5378 ralrp 6205 infm3 6222 infmsup 6236 zmin 6391 raluz2 6570 nnwos 6587 clm4i 7283 ntreq0 7918 islp2 7957 cncfmet 8116 spwpr2 8920 grothpw 9054 axgroth5 9055 choc0 9566 h1deoi 9748 h1dei 9749 mdsl2i 10530 xfree2 10654 domrngref 10764 isexid 10893 dfiin2g 11400 compfipin0 11493 alexsublem3 11498 alexsublem4 11499 neibastop2 11584 neibastop3 11585 fbssint 11626 gapm 11784 heiborlem13 12023 heiborlem16 12026 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 |
| This theorem depends on definitions: df-bi 145 |