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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 266 | . 2 ⊢ (𝜒 ↔ 𝜓) |
4 | 3bitr3i.3 | . 2 ⊢ (𝜓 ↔ 𝜃) | |
5 | 3, 4 | bitri 264 | 1 ⊢ (𝜒 ↔ 𝜃) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 196 |
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 197 |
This theorem is referenced by: an12 838 xorass 1468 cbval2 2279 cbvaldva 2281 sbco2d 2416 sbcom 2418 equsb3 2432 equsb3ALT 2433 elsb3 2434 elsb4 2435 sb7f 2453 sbco4lem 2465 eq2tri 2683 eqsb3 2728 clelsb3 2729 clelsb3f 2768 r19.35 3084 ralcom4 3224 rexcom4 3225 ceqsralt 3229 gencbvex 3250 gencbval 3252 ceqsrexbv 3337 euind 3393 reuind 3411 sbccomlem 3508 sbccom 3509 csbcom 3994 difcom 4053 eqsn 4361 uniintsn 4514 disjxun 4651 reusv2lem4 4872 exss 4931 opab0 5007 elxp2OLD 5133 eqbrriv 5215 dm0rn0 5342 dfres2 5453 qfto 5517 rninxp 5573 coeq0 5644 fununi 5964 dffv2 6271 fndmin 6324 fnprb 6472 fntpb 6473 dfoprab2 6701 dfer2 7743 eceqoveq 7853 euen1 8026 xpsnen 8044 xpassen 8054 marypha2lem3 8343 rankuni 8726 card1 8794 alephislim 8906 dfacacn 8963 kmlem4 8975 ac6num 9301 zorn2lem4 9321 fpwwe2lem8 9459 fpwwe2lem12 9463 mappsrpr 9929 sqeqori 12976 trclublem 13734 fprodle 14727 vdwmc2 15683 txflf 21810 metustid 22359 caucfil 23081 ovolgelb 23248 dfcgra2 25721 axcontlem5 25848 frgr3v 27139 nmoubi 27627 hvsubaddi 27923 hlimeui 28097 omlsilem 28261 pjoml3i 28445 hodsi 28634 nmopub 28767 nmfnleub 28784 nmopcoadj0i 28962 pjin3i 29053 or3dir 29308 ralcom4f 29316 rexcom4f 29317 uniinn0 29366 ordtconnlem1 29970 bnj62 30786 bnj610 30817 bnj1143 30861 bnj1533 30922 bnj543 30963 bnj545 30965 bnj594 30982 ceqsralv2 31607 br1steq 31670 br2ndeq 31671 brsuccf 32048 brfullfun 32055 filnetlem4 32376 bj-ssbcom3lem 32650 bj-cbval2v 32737 bj-clelsb3 32848 icorempt2 33199 poimirlem13 33422 poimirlem14 33423 poimirlem21 33430 poimirlem22 33431 poimir 33442 sbccom2lem 33929 eldmqsres 34051 opelinxp 34111 alrmomo 34123 isltrn2N 35406 moxfr 37255 ifporcor 37806 ifpancor 37808 ifpbicor 37820 ifpnorcor 37825 ifpnancor 37826 ifpororb 37850 relexp0eq 37993 hashnzfzclim 38521 pm11.6 38592 sbc3or 38738 cbvexsv 38762 sprvalpwn0 41733 copisnmnd 41809 |
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