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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 950 hband 1109 equs5e 1196 mopick2 1434 euor2 1435 2moswap 1442 2eu1 1447 necon3bd 1600 necon3d 1601 necon2ad 1611 r19.21ad 1714 cla4egf 1857 cla42gv 1861 cla43gv 1863 ra5 1996 difsn 2460 pwpw0 2465 sssn 2469 ssuni 2517 dfwe2 2930 wefrc 2938 ordtri3or 2974 ordtri3 2978 ordon 2982 ssorduni 2988 oneqmini 3012 tfis 3122 nnsuc 3143 ssrel 3242 opeldm 3309 relssres 3384 cotr 3428 cnvsym 3429 ssrnres 3473 funss 3526 fnun 3586 f1oun 3697 ssimaex 3759 fvopab3ig 3769 chfnrn 3793 dffo4 3811 dffo5 3812 fvclss 3846 isomin 3890 isofrlem 3892 f1oweALT 3897 rdglim2 3940 tz7.48lem 3946 tz7.49 3950 fnoprabg 4003 oprabvalig 4015 infsdomnn 4517 pssnn 4519 pm54.43 4552 inf3lem4 4596 rankr1 4654 r1pwcl 4667 aceq5lem4 4718 aceq5 4720 aceq6b 4722 ac5b 4733 kmlem2 4746 zorn2lem4 4771 zorn2lem6 4773 zorn2lem7 4774 cardne 4810 carden 4811 carddom 4816 alephordi 4854 cardaleph 4865 carduniima 4870 cardinfima 4871 alephval3 4883 cflim 4889 indpi 5014 ltaddpq 5059 genpcl 5091 prlem934 5119 ltaddpr 5120 ltexprlem1 5122 ltexprlem5 5126 reclem4pr 5139 suplem1pr 5141 pre-axsup 5271 zaddclt 6120 zmulclt 6135 zneo 6155 zneoOLD 6156 uzwo4OLD 6166 icoshft 6349 uzwo 6395 uzwoOLD 6396 nn0opth 6604 sqr2irr 6667 caubnd 6871 bccl2t 6917 iserzcmp0 7087 caucvglem2 7102 basgen2t 7589 distop 7599 cnpco 7719 cncnplem2 7725 metreslem 7774 unirnbl 7827 metelcls 7916 ubthlem5 8477 shmods 9300 orthin 9308 spansneleqOLD 9433 h1datom 9444 osumlem4 9521 stcltr2 10140 atom1d 10217 sumdmdi 10278 cdj3lem1 10295 oprabvaligg 10377 cdrci 10417 fipfil 10474 fipfil2 10475 filintf 10479 rdmob 10561 |
| 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 |