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| Description: A mixed syllogism inference from a nested implication and a biconditional. |
| Ref | Expression |
|---|---|
| syl5ibr.1 |
|
| syl5ibr.2 |
|
| Ref | Expression |
|---|---|
| syl5ibr |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl5ibr.1 |
. 2
| |
| 2 | syl5ibr.2 |
. . 3
| |
| 3 | 2 | biimpr 152 |
. 2
|
| 4 | 1, 3 | syl5 21 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: nicodraw 951 a12studyALT 1378 necon4ad 1624 necon1bd 1630 pm2.61dne 1633 rcla4dv 1875 ceqex 1883 ra4esbca 1996 csbie2t 2030 ssdisj 2315 pssdifn0 2326 wereu 2941 ordelord 2966 unizlim 3109 findsg 3153 tfindsg 3158 tfindes 3160 tfinds2 3161 ralxp 3214 cotr 3432 cnvsym 3433 funopfv 3746 funfvima 3847 tz7.49 3954 om00 4199 eceqopreq 4306 th3qlem1 4307 unen 4423 php3 4504 pssnn 4522 isfinite2 4532 fiint 4543 sucprcreg 4583 inf3lem2 4597 setind 4631 rankxplim3 4697 aceq5lem4 4721 kmlem13 4760 zorn2lem4 4774 cardlim 4834 ssxr 5523 arch 6028 xrsupsslem 6033 xrinfmsslem 6034 uzwo3lem2 6175 qbtwnre 6228 ioossicc 6343 fseqsupcl 6470 fseqsupub 6471 sq01t 6596 crulem 6681 cau4i 6870 cau5 6871 cvganz 6876 caubnd 6878 bcclt 6925 climaddlem3 7069 climmullem8 7080 efseq1ex 7265 infmap2lem1 7539 0ntr 7662 opnneiid 7697 opnin 7831 lmuni 7913 xpcn 7938 bcthlem10 7970 nvmul0or 8236 hvmul0ort 8849 hlimcaui 9061 ocnelt 9125 spanun 9422 spansn 9436 h1datom 9461 hon0 9676 leopaddt 10021 leoptrt 10026 mdsymlem6 10291 sumdmdlem2 10302 cdjreu 10315 fiiu2 10436 qusp 10489 iintlem1 10548 |
| 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 |