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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 948 hband 1087 equs5e 1182 mopick2 1413 euor2 1414 2moswap 1421 2eu1 1426 necon3bd 1579 necon3d 1580 necon2ad 1590 r19.21ad 1693 cla4egf 1836 cla42gv 1840 ra5 1971 difsn 2434 pwpw0 2439 sssn 2443 ssuni 2490 dfwe2 2898 wefrc 2906 ordtri3or 2942 ordtri3 2946 ordon 2950 ssorduni 2956 oneqmini 2980 tfis 3090 nnsuc 3111 ssrel 3209 opeldm 3271 relssres 3343 cotr 3387 cnvsym 3388 ssrnres 3427 funss 3475 fnun 3534 f1oun 3645 ssimaex 3707 fvopab3ig 3717 chfnrn 3741 dffo4 3759 dffo5 3760 fvclss 3794 isomin 3838 isofrlem 3840 f1oweALT 3845 rdglim2 3888 tz7.48lem 3894 tz7.49 3898 fnoprabg 3951 oprabvalig 3963 infsdomnn 4463 pssnn 4465 pm54.43 4498 inf3lem4 4540 rankr1 4598 r1pwcl 4611 aceq5lem4 4662 aceq5 4664 aceq6b 4666 ac5b 4677 kmlem2 4690 zorn2lem4 4715 zorn2lem6 4717 zorn2lem7 4718 cardne 4754 carden 4755 carddom 4759 alephordi 4797 cardaleph 4808 carduniima 4813 cardinfima 4814 alephval3 4826 cflim 4832 indpi 4957 ltaddpq 5002 genpcl 5034 prlem934 5062 ltaddpr 5063 ltexprlem1 5065 ltexprlem5 5069 reclem4pr 5082 suplem1pr 5084 pre-axsup 5214 zaddclt 6063 zmulclt 6078 zneo 6098 zneoOLD 6099 uzwo4OLD 6109 icoshft 6292 uzwo 6338 uzwoOLD 6339 nn0opth 6547 sqr2irr 6610 caubnd 6814 bccl2t 6860 iserzcmp0 7030 caucvglem2 7045 basgen2t 7532 distop 7542 cnpco 7656 cncnplem2 7662 metreslem 7710 unirnbl 7763 metelcls 7848 ubthlem5 8399 oprabvaligg 8700 cdrci 8738 fipfil 8788 fipfil2 8789 filintf 8793 rdmob 8875 shmods 9491 orthin 9499 spansneleqOLD 9624 h1datom 9635 osumlem4 9712 stcltr2 10326 atom1d 10402 sumdmdi 10463 cdj3lem1 10480 |
| 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 |