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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 266 | . 2 ⊢ (𝜑 ↔ 𝜒) |
4 | 3bitr2i.3 | . 2 ⊢ (𝜒 ↔ 𝜃) | |
5 | 3, 4 | bitri 263 | 1 ⊢ (𝜑 ↔ 𝜃) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 195 |
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 196 |
This theorem is referenced by: con2bi 342 an13 836 xorneg2 1466 2eu4 2544 2eu5 2545 exists1 2549 euxfr 3359 euind 3360 rmo4 3366 2reu5lem3 3382 rmo3 3494 difin 3823 reusv2lem4 4798 rabxp 5078 elvvv 5101 eliunxp 5181 imadisj 5403 intirr 5433 resco 5556 funcnv3 5873 fncnv 5876 fun11 5877 fununi 5878 mptfnf 5928 f1mpt 6419 mpt2mptx 6649 uniuni 6865 frxp 7174 oeeu 7570 ixp0x 7822 mapsnen 7920 xpcomco 7935 1sdom 8048 dffi3 8220 wemapsolem 8338 cardval3 8661 kmlem4 8858 kmlem12 8866 kmlem14 8868 kmlem15 8869 kmlem16 8870 fpwwe2 9344 axgroth4 9533 ltexprlem4 9740 bitsmod 14996 pythagtrip 15377 pgpfac1 18302 pgpfac 18306 isassa 19136 basdif0 20568 ntreq0 20691 tgcmp 21014 tx1cn 21222 rnelfmlem 21566 phtpcer 22602 phtpcerOLD 22603 iscvsp 22736 caucfil 22889 minveclem1 23003 ovoliunlem1 23077 mdegleb 23628 istrkg2ld 25159 3v3e3cycl2 26192 iswwlk 26211 adjbd1o 28328 nmo 28709 rmo3f 28719 rmo4fOLD 28720 mpt2mptxf 28860 isros 29558 1stmbfm 29649 bnj976 30102 bnj1143 30115 bnj1533 30176 bnj864 30246 bnj983 30275 bnj1174 30325 bnj1175 30326 bnj1280 30342 cvmlift2lem12 30550 axacprim 30838 dfrecs2 31227 andnand1 31568 bj-dfssb2 31829 bj-denotes 32052 bj-snglc 32150 bj-dfmpt2a 32252 bj-mpt2mptALT 32253 mptsnunlem 32361 wl-cases2-dnf 32474 itg2addnc 32634 asindmre 32665 isopos 33485 dihglblem6 35647 dihglb2 35649 fgraphopab 36807 ifpid2g 36857 ifpim23g 36859 rp-fakeanorass 36877 elmapintrab 36901 relintabex 36906 relnonrel 36912 undmrnresiss 36929 elintima 36964 relexp0eq 37012 iunrelexp0 37013 dffrege115 37292 frege131 37308 frege133 37310 ntrneikb 37412 onfrALTlem5 37778 ndisj2 38243 ndmaovcom 39934 usgr2pth0 40971 eliunxp2 41905 mpt2mptx2 41906 alimp-no-surprise 42336 alsi-no-surprise 42351 |
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