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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 949 a12studyALT 1372 necon4ad 1618 necon1bd 1624 pm2.61dne 1627 rcla4dv 1869 ceqex 1877 ra4esbca 1989 csbie2t 2023 ssdisj 2308 pssdifn0 2319 wereu 2935 ordelord 2960 unizlim 3103 findsg 3147 tfindsg 3152 tfindes 3154 tfinds2 3155 ralxp 3208 cotr 3420 cnvsym 3421 funopfv 3736 funfvima 3837 tz7.49 3944 om00 4190 eceqopreq 4297 th3qlem1 4298 unen 4414 php3 4495 pssnn 4513 isfinite2 4523 fiint 4534 sucprcreg 4572 inf3lem2 4586 setind 4620 rankxplim3 4686 aceq5lem4 4710 kmlem13 4749 zorn2lem4 4763 cardlim 4823 ssxr 5513 arch 6018 xrsupsslem 6023 xrinfmsslem 6024 uzwo3lem2 6165 qbtwnre 6216 ioossicc 6330 fseqsupcl 6457 fseqsupub 6458 sq01t 6582 crulem 6666 cau4i 6855 cau5 6856 cvganz 6861 caubnd 6863 bcclt 6910 climaddlem3 7052 climmullem8 7063 efseq1ex 7248 infmap2lem1 7521 0ntr 7644 opnneiid 7678 opnin 7809 lmuni 7886 xpcn 7910 bcthlem10 7942 nvmul0or 8212 hvmul0ort 8815 hlimcaui 9027 ocnelt 9086 spanun 9382 spansn 9396 h1datom 9421 hon0 9636 leopaddt 9977 mdsymlem6 10243 sumdmdlem2 10253 cdjreu 10264 fiiu2 10377 qusp 10430 iintlem1 10476 |
| 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 |