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Mirrors > Home > MPE Home > Th. List > 3bitr2i | Structured version Visualization version GIF version |
Description: A chained inference from transitive law for logical equivalence. (Contributed by NM, 4-Aug-2006.) |
Ref | Expression |
---|---|
3bitr2i.1 | ⊢ (𝜑 ↔ 𝜓) |
3bitr2i.2 | ⊢ (𝜒 ↔ 𝜓) |
3bitr2i.3 | ⊢ (𝜒 ↔ 𝜃) |
Ref | Expression |
---|---|
3bitr2i | ⊢ (𝜑 ↔ 𝜃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3bitr2i.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
2 | 3bitr2i.2 | . . 3 ⊢ (𝜒 ↔ 𝜓) | |
3 | 1, 2 | bitr4i 267 | . 2 ⊢ (𝜑 ↔ 𝜒) |
4 | 3bitr2i.3 | . 2 ⊢ (𝜒 ↔ 𝜃) | |
5 | 3, 4 | bitri 264 | 1 ⊢ (𝜑 ↔ 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: con2bi 343 an13 840 xorneg2 1474 2eu4 2556 2eu5 2557 exists1 2561 euxfr 3392 euind 3393 rmo4 3399 2reu5lem3 3415 rmo3 3528 difin 3861 reusv2lem4 4872 rabxp 5154 elvvv 5178 eliunxp 5259 imadisj 5484 intirr 5514 resco 5639 funcnv3 5959 fncnv 5962 fun11 5963 fununi 5964 mptfnf 6015 f1mpt 6518 mpt2mptx 6751 uniuni 6971 frxp 7287 oeeu 7683 ixp0x 7936 mapsnen 8035 xpcomco 8050 1sdom 8163 dffi3 8337 wemapsolem 8455 cardval3 8778 kmlem4 8975 kmlem12 8983 kmlem14 8985 kmlem15 8986 kmlem16 8987 fpwwe2 9465 axgroth4 9654 ltexprlem4 9861 bitsmod 15158 pythagtrip 15539 pgpfac1 18479 pgpfac 18483 isassa 19315 basdif0 20757 ntreq0 20881 tgcmp 21204 tx1cn 21412 rnelfmlem 21756 phtpcer 22794 phtpcerOLD 22795 iscvsp 22928 caucfil 23081 minveclem1 23195 ovoliunlem1 23270 mdegleb 23824 istrkg2ld 25359 numedglnl 26039 usgr2pth0 26661 adjbd1o 28944 nmo 29325 rmo3f 29335 rmo4fOLD 29336 difrab2 29339 mpt2mptxf 29477 isros 30231 1stmbfm 30322 bnj976 30848 bnj1143 30861 bnj1533 30922 bnj864 30992 bnj983 31021 bnj1174 31071 bnj1175 31072 bnj1280 31088 cvmlift2lem12 31296 axacprim 31584 dmscut 31918 dfrecs2 32057 andnand1 32398 bj-dfssb2 32640 bj-denotes 32858 bj-snglc 32957 bj-disj2r 33013 bj-dfmpt2a 33071 bj-mpt2mptALT 33072 mptsnunlem 33185 wl-cases2-dnf 33295 itg2addnc 33464 asindmre 33495 brres2 34035 isopos 34467 dihglblem6 36629 dihglb2 36631 fgraphopab 37788 ifpid2g 37838 ifpim23g 37840 rp-fakeanorass 37858 elmapintrab 37882 relintabex 37887 relnonrel 37893 undmrnresiss 37910 elintima 37945 relexp0eq 37993 iunrelexp0 37994 dffrege115 38272 frege131 38288 frege133 38290 ntrneikb 38392 onfrALTlem5 38757 ndisj2 39218 ndmaovcom 41285 eliunxp2 42112 mpt2mptx2 42113 alimp-no-surprise 42527 alsi-no-surprise 42542 |
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