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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 | biimpr 152 |
. . 3
|
| 3 | 2 | imim1i 16 |
. 2
|
| 4 | 1 | biimp 151 |
. . 3
|
| 5 | 4 | imim1i 16 |
. 2
|
| 6 | 3, 5 | impbi 157 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: imbi12i 188 imor 234 impexp 347 pm4.78 354 bibi2i 610 19.37 1082 dfsb3 1228 sbor 1237 sb19.21 1238 a12lem2 1379 mo4f 1404 2mos 1451 neor 1641 r3al 1693 r19.23v 1744 ralcom 1777 reu2 1933 rmo4 1936 unss 2208 inssdif0 2338 ssundif 2349 dfif2 2368 ralpr 2433 snss 2466 unissb 2533 ssintab 2555 intun 2567 intpr 2568 dfiin2 2593 iunss 2596 dftr2 2688 axpow 2750 pwex 2752 sbcsng 2760 axun 2874 uniex2 2876 dfom2 3140 reluni 3272 asymref2 3447 dffun2 3533 dffun4 3535 dffun5 3536 dffun6 3546 fununi 3570 funcnvuni 3571 f1fv 3881 fiint 4576 fiintOLD 4577 setind2 4666 ranksn 4706 scottexs 4735 scott0s 4736 kardex 4742 karden 4743 kmlem4 4785 kmlem12 4793 axpowndlem3 4970 zfcndun 4986 zfcndpow 4987 zfcndac 4990 suppsr3 5243 infm3 6063 infmsup 6077 zmin 6228 ralrp 6297 raluz2 6451 nnwos 6468 clm4 7087 ntreq0 7712 islp2 7751 cncfmet 7909 spwpr2 8661 choc0 9292 h1deot 9474 h1det 9475 mdsl2 10252 |
| 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 147 |