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| Description: A mixed syllogism inference from a nested implication and a biconditional. |
| Ref | Expression |
|---|---|
| syl6ib.1 |
|
| syl6ib.2 |
|
| Ref | Expression |
|---|---|
| syl6ib |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl6ib.1 |
. 2
| |
| 2 | syl6ib.2 |
. . 3
| |
| 3 | 2 | biimpi 168 |
. 2
|
| 4 | 1, 3 | syl6 25 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: pm3.37 308 exp4a 409 pm5.18OLD 723 19.23 1411 19.29OLD 1422 cbvexd 1704 ax15 1750 2eu3 1855 exists2 1863 necon2bd 2057 necon2d 2058 necon4ad 2071 necon4bdOLD 2074 necon4d 2075 necon4dOLD 2076 necon1bd 2080 eqsbc3r 2507 ssralv2 2674 reupick 2874 sspr 3144 trin 3422 pwssun 3578 efrirr 3637 wefrc 3652 ordtri3 3697 onfr 3702 suc11 3773 onmindif2 3893 ssrelOLD 4076 ssrelrelOLD 4084 elreldm 4185 issOLD 4255 xp11 4347 ssrnres 4354 opelf 4579 dffo4 4793 mapsn 5404 en2d 5459 domtriord 5546 nneneq 5606 unblem1 5633 supnub 5672 onsdom 5694 suc11reg 5710 inf3lem2 5720 trcl 5752 en3lplem2 5757 tz9.13 5774 tratrb 5831 truniALT 5845 aceq5lem5 5901 entric 5990 unxpdomlem 5995 carduniima 6038 cardinfima 6039 alephval2 6050 distrlem2pr 6280 ltapr 6303 suppsrlem 6373 suppsr2 6375 suprelem 6411 ssxrOLD 6715 ngtmnft 6742 sup2 7260 nnunb 7279 elnn0nn 7380 nneoi 7409 uzwo3lem1 7429 qsqueeze 7461 icoshft 7577 indstr 7630 elfzlem 7643 fsequb 7702 cau3iri 8167 cau5i 8171 iserzex 8395 cvgratlem2ALT 8510 infpn2 8778 tgval3 8895 iincld 8955 sncld 9064 lmuni 9229 bcthlem14 9290 gapm 9462 lnon0 9798 pilem1 10020 indexfi 10174 dif1card 10177 fbunfip 10282 filrn 10293 hausfillim 10303 ocnel 10803 h1dn0 11108 osumlem5 11217 nmcopexlem1 11588 nmcfnexlem1 11617 cnlnssadj 11650 cvnbtwn2 11859 cvnbtwn3 11860 cvnbtwn4 11861 dmdbr2 11875 dmdbr3 11877 dmdbr4 11878 superpos 11926 atcvati 11958 mdsymlem4 11978 sumdmdii 11987 cdj3lem1 12006 bnj876 12803 bnj1284 13482 divalglem5 13700 ndvdssub 13710 coprm 13782 untangtr 13802 3orel2 13806 elres 13824 dfon2lem6 13854 dfon2lem7 13855 nofv 13998 axdenselem4 14022 axdenselem7 14025 axfelem12 14042 islatalg 14531 elsubops 14877 altretop 14997 iintlem1 15010 mtord 15346 dmsdtriordOLD 15360 trer 15361 elicc3 15362 onsdomOLD 15385 hscptsscld 15434 alexsublem4 15440 reconnlem1 15446 reconnlem4 15449 reconn 15451 locfincomp 15514 comppfsc 15517 neibastop2lem4 15522 fnemeet1 15528 ist1-3 15543 filufint 15574 flimfnfcls 15615 tailuni 15638 filnet 15645 indexfiOLD 15755 fdc 15812 incsequz 15815 txmet 15925 sstotbnd 15936 totbndss 15937 heiborlem37 15991 0ring 16175 dmncan1 16224 bicomdd 16228 prtlem90 16246 prtlem16 16272 prtlem15 16281 ax12 16367 cla4gft 16406 joinlem 16817 meetlem 16824 hlrelat2 17052 cvrat 17062 linepsub 17232 |
| 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 164 |