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| Description: A mixed syllogism inference from a nested implication and a biconditional. Useful for substituting an embedded consequent with a definition. |
| Ref | Expression |
|---|---|
| syl6ibr.1 |
|
| syl6ibr.2 |
|
| Ref | Expression |
|---|---|
| syl6ibr |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl6ibr.1 |
. 2
| |
| 2 | syl6ibr.2 |
. . 3
| |
| 3 | 2 | biimpr 152 |
. 2
|
| 4 | 1, 3 | syl6 22 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: imp4a 364 nicodraw 954 hband 1113 equs5e 1200 mopick2 1439 euor2 1440 2moswap 1447 2eu1 1452 necon3bd 1606 necon3d 1607 necon2ad 1617 r19.21ad 1720 cla4egf 1864 cla42gv 1868 cla43gv 1870 ra5 2003 difsn 2468 pwpw0 2473 sssn 2477 pwsnALT 2505 ssuni 2526 dfwe2 2941 wefrc 2949 ordtri3or 2985 ordtri3 2989 ordon 2993 ssorduni 2999 oneqmini 3023 tfis 3133 nnsuc 3154 ssrel 3253 opeldm 3320 relssres 3398 cotr 3442 cnvsym 3443 ssrnres 3487 funss 3540 fnun 3600 f1oun 3712 ssimaex 3774 fvopab3ig 3784 chfnrn 3808 dffo4 3826 dffo5 3827 fvclss 3861 isomin 3905 isofrlem 3907 f1oweALT 3912 rdglim2 3955 tz7.48lem 3961 tz7.49 3965 fnoprabg 4018 oprabvalig 4030 infsdomnn 4541 pssnn 4544 ssfi 4547 pm54.43 4581 inf3lem4 4625 rankr1 4684 r1pwcl 4697 aceq5lem4 4748 aceq5 4750 aceq6b 4752 ac5b 4763 kmlem2 4776 zorn2lem4 4801 zorn2lem6 4803 zorn2lem7 4804 cardne 4840 carden 4841 carddom 4846 alephordi 4885 cardaleph 4896 carduniima 4901 cardinfima 4902 alephval3 4914 cflim 4921 indpi 5046 ltaddpq 5091 genpcl 5123 prlem934 5151 ltaddpr 5152 ltexprlem1 5154 ltexprlem5 5158 reclem4pr 5171 suplem1pr 5173 pre-axsup 5303 zaddclt 6167 zmulclt 6182 zneo 6202 uzwo4OLD 6212 icoshft 6409 uzwo 6456 uzwoOLD 6457 nn0opth 6667 sqr2irr 6730 caubnd 6926 bccl2t 6971 iserzcmp0 7143 caucvglem2 7158 basgen2t 7638 distop 7646 cnpco 7766 cncnplem2 7772 metreslem 7819 unirnbl 7872 metelcls 7962 ubthlem5 8529 shmods 9357 orthin 9365 h1datom 9499 osumlem4 9576 stcltr2 10197 atom1d 10275 sumdmdi 10337 cdj3lem1 10356 oprabvaligg 10435 cdrci 10480 fipfil 10549 fipfil2 10550 filintf 10554 rdmob 10652 |
| 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 |