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Mirrors > Home > MPE Home > Th. List > 3bitr3i | Structured version Visualization version GIF version |
Description: A chained inference from transitive law for logical equivalence. (Contributed by NM, 19-Aug-1993.) |
Ref | Expression |
---|---|
3bitr3i.1 | ⊢ (𝜑 ↔ 𝜓) |
3bitr3i.2 | ⊢ (𝜑 ↔ 𝜒) |
3bitr3i.3 | ⊢ (𝜓 ↔ 𝜃) |
Ref | Expression |
---|---|
3bitr3i | ⊢ (𝜒 ↔ 𝜃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3bitr3i.2 | . . 3 ⊢ (𝜑 ↔ 𝜒) | |
2 | 3bitr3i.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
3 | 1, 2 | bitr3i 279 | . 2 ⊢ (𝜒 ↔ 𝜓) |
4 | 3bitr3i.3 | . 2 ⊢ (𝜓 ↔ 𝜃) | |
5 | 3, 4 | bitri 277 | 1 ⊢ (𝜒 ↔ 𝜃) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 209 |
This theorem is referenced by: an33rean 1479 xorass 1506 cbvaldvaw 2045 sbievw2 2107 sbco4lem 2283 cbval2vOLD 2364 cbvex 2417 cbvexvOLD 2421 cbval2OLD 2433 sbco2d 2554 sbcom 2556 sb7f 2568 sb7fALT 2616 eq2tri 2883 clelsb3vOLD 2941 clelsb3fw 2981 clelsb3f 2982 clelsb3fOLD 2983 cbvraldva2 3456 cbvrexdva2 3457 cbvrexdva2OLD 3458 ralcom4OLD 3525 rexcom4OLD 3526 ceqsralt 3528 gencbvex 3549 gencbval 3551 ceqsrexbv 3650 euind 3715 reuind 3744 sbccomlem 3853 sbccom 3854 csbcom 4369 difcom 4434 eqsn 4762 uniintsn 4913 disjxun 5064 reusv2lem4 5302 exss 5355 opab0 5441 opelinxp 5631 eqbrriv 5664 dm0rn0 5795 elidinxp 5911 qfto 5981 rninxp 6036 coeq0 6108 fununi 6429 dffv2 6756 fndmin 6815 fnprb 6971 fntpb 6972 dfoprab2 7212 dfer2 8290 eceqoveq 8402 euen1 8579 xpsnen 8601 xpassen 8611 marypha2lem3 8901 rankuni 9292 card1 9397 alephislim 9509 dfacacn 9567 kmlem4 9579 ac6num 9901 zorn2lem4 9921 mappsrpr 10530 sqeqori 13577 trclublem 14355 fprodle 15350 vdwmc2 16315 txflf 22614 metustid 23164 caucfil 23886 ovolgelb 24081 dfcgra2 26616 axcontlem5 26754 frgr3v 28054 nmoubi 28549 hvsubaddi 28843 hlimeui 29017 omlsilem 29179 pjoml3i 29363 hodsi 29552 nmopub 29685 nmfnleub 29702 nmopcoadj0i 29880 pjin3i 29971 or3dir 30226 ralcom4f 30233 rexcom4f 30234 uniinn0 30302 ordtconnlem1 31167 bnj62 31990 bnj610 32018 bnj1143 32062 bnj1533 32124 bnj543 32165 bnj545 32167 bnj594 32184 cusgracyclt3v 32403 ceqsralv2 32956 brsuccf 33402 brfullfun 33409 filnetlem4 33729 icorempo 34635 poimirlem13 34920 poimirlem14 34921 poimirlem21 34928 poimirlem22 34929 poimir 34940 sbccom2lem 35417 alrmomorn 35627 dfeldisj5 35969 isltrn2N 37271 moxfr 39309 ifporcor 39847 ifpancor 39849 ifpbicor 39861 ifpnorcor 39866 ifpnancor 39867 ifpororb 39891 relexp0eq 40066 hashnzfzclim 40674 pm11.6 40744 sbc3or 40886 cbvexsv 40901 dfich2 43633 ichbi12i 43638 sprvalpwn0 43665 copisnmnd 44096 |
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