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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 949 hband 1107 equs5e 1194 mopick2 1429 euor2 1430 2moswap 1437 2eu1 1442 necon3bd 1595 necon3d 1596 necon2ad 1606 r19.21ad 1709 cla4egf 1852 cla42gv 1856 cla43gv 1858 ra5 1990 difsn 2455 pwpw0 2460 sssn 2464 ssuni 2512 dfwe2 2925 wefrc 2933 ordtri3or 2969 ordtri3 2973 ordon 2977 ssorduni 2983 oneqmini 3007 tfis 3117 nnsuc 3138 ssrel 3237 opeldm 3303 relssres 3376 cotr 3420 cnvsym 3421 ssrnres 3467 funss 3520 fnun 3580 f1oun 3691 ssimaex 3753 fvopab3ig 3763 chfnrn 3787 dffo4 3805 dffo5 3806 fvclss 3840 isomin 3884 isofrlem 3886 f1oweALT 3891 rdglim2 3934 tz7.48lem 3940 tz7.49 3944 fnoprabg 3997 oprabvalig 4009 infsdomnn 4511 pssnn 4513 pm54.43 4546 inf3lem4 4588 rankr1 4646 r1pwcl 4659 aceq5lem4 4710 aceq5 4712 aceq6b 4714 ac5b 4725 kmlem2 4738 zorn2lem4 4763 zorn2lem6 4765 zorn2lem7 4766 cardne 4802 carden 4803 carddom 4808 alephordi 4846 cardaleph 4857 carduniima 4862 cardinfima 4863 alephval3 4875 cflim 4881 indpi 5006 ltaddpq 5051 genpcl 5083 prlem934 5111 ltaddpr 5112 ltexprlem1 5114 ltexprlem5 5118 reclem4pr 5131 suplem1pr 5133 pre-axsup 5263 zaddclt 6112 zmulclt 6127 zneo 6147 zneoOLD 6148 uzwo4OLD 6158 icoshft 6341 uzwo 6387 uzwoOLD 6388 nn0opth 6596 sqr2irr 6659 caubnd 6863 bccl2t 6909 iserzcmp0 7079 caucvglem2 7094 basgen2t 7581 distop 7591 cnpco 7708 cncnplem2 7714 metreslem 7762 unirnbl 7815 metelcls 7900 ubthlem5 8464 shmods 9277 orthin 9285 spansneleqOLD 9410 h1datom 9421 osumlem4 9498 stcltr2 10112 atom1d 10188 sumdmdi 10249 cdj3lem1 10266 oprabvaligg 10341 cdrci 10381 fipfil 10438 fipfil2 10439 filintf 10443 rdmob 10525 |
| 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 |