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| Mirrors > Home > MPE Home > Th. List > 3bitr3d | Structured version Visualization version GIF version | ||
| Description: Deduction from transitivity of biconditional. Useful for converting conditional definitions in a formula. (Contributed by NM, 24-Apr-1996.) |
| Ref | Expression |
|---|---|
| 3bitr3d.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| 3bitr3d.2 | ⊢ (𝜑 → (𝜓 ↔ 𝜃)) |
| 3bitr3d.3 | ⊢ (𝜑 → (𝜒 ↔ 𝜏)) |
| Ref | Expression |
|---|---|
| 3bitr3d | ⊢ (𝜑 → (𝜃 ↔ 𝜏)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3bitr3d.2 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜃)) | |
| 2 | 3bitr3d.1 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 3 | 1, 2 | bitr3d 284 | . 2 ⊢ (𝜑 → (𝜃 ↔ 𝜒)) |
| 4 | 3bitr3d.3 | . 2 ⊢ (𝜑 → (𝜒 ↔ 𝜏)) | |
| 5 | 3, 4 | bitrd 282 | 1 ⊢ (𝜑 → (𝜃 ↔ 𝜏)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This proof depends on definitions: df-bi 210 |
| This theorem is used by: sbcne12 4376 fnprb 7237 fntpb 7238 eqfunresadj 7393 eloprabga 7552 ordsucuniel 7859 ordsucun 7860 mpof1o2d 8164 oeoa 8634 ereldm 8799 boxcutc 8997 mapen 9188 mapfien 9427 wemapwe 9725 sdom2en01 10407 prlem936 11159 subcan 11640 mulcan1g 11996 conjmul 12061 ltrec 12226 rebtwnz 13101 xposdif 13419 divelunit 13652 fseq1m1p1 13760 fzm1 13768 fllt 13973 hashfacen 14626 hashf1 14629 ccat0 14748 sgnmulsgn 15291 lenegsq 15517 dvdsmod 16528 bitsmod 16635 smueqlem 16689 rpexp 16927 eulerthlem2 16988 odzdvds 17002 pcelnn 17077 xpsle 17780 isepi 17944 fthmon 18133 cat1 18301 pospropd 18528 grpidpropd 18871 mgmhmpropd 18916 sgrppropd 18949 mndpropd 18980 mhmpropd 19016 grppropd 19191 ghmnsgima 19483 mndodcong 19786 odf1 19806 odf1o1 19816 sylow3lem6 19876 lsmcntzr 19924 efgredlema 19984 cmnpropd 20035 qusecsub 20079 dprdf11 20269 rngpropd 20426 ringpropd 20549 dvdsrpropd 20676 resrhm2b 20884 abvpropd 21122 isorng 21148 lmodprop2d 21229 lsspropd 21322 lmhmpropd 21378 lbspropd 21404 lvecvscan 21419 lvecvscan2 21420 chrnzr 21866 zndvds0 21886 ip2eq 21989 phlpropd 21991 assapropd 22209 qtopcn 24063 tsmsf1o 24494 xmetgt0 24707 txmetcnp 24896 metustsym 24904 nlmmul0or 25032 cnmet 25120 evth 25310 isclmp 25448 minveclem3b 25779 mbfposr 26003 itg2cn 26114 iblcnlem 26139 dvcvx 26370 ulm2 26742 efeq1 26886 dcubic 27204 mcubic 27205 dquart 27211 birthdaylem3 27311 ftalem2 27431 issqf 27493 sqff1o 27539 bposlem7 27647 lgsabs1 27693 gausslemma2dlem1a 27722 lgsquadlem2 27738 addsq2reu 27797 dchrisum0lem1 27873 sltssnb 28185 ltsrec 28217 opphllem6 29258 colhp 29278 lmiinv 29327 lmiopp 29338 wlkeq 30244 eupth2lem3lem3 30861 eupth2lem3lem6 30864 nmounbi 31408 ip2eqi 31488 hvmulcan 31704 hvsubcan2 31707 hi2eq 31737 fh2 32251 riesz4i 32695 cvbr4i 32999 sgnmulsgp 33493 xdivpnfrp 33569 qusker 33980 ellspds 33994 ply1moneq 34190 ballotlemfc0 35195 ballotlemfcc 35196 subfacp1lem5 36116 topfneec2 37322 neibastop3 37328 unccur 38718 cos2h 38726 tan2h 38727 poimirlem25 38755 poimirlem27 38757 dvasin 38814 caures 38886 ismtyima 38929 isdmn3 39200 dmecd 39434 releldmqscoss 39869 tendospcanN 42272 dochsncom 42631 quadfac 43447 sqrtcval 44833 or3or 45215 neicvgel1 45311 rusbcALT 45613 sbcoreleleqVD 46032 climreeq 46830 coseq0 47079 modmkpkne 48642 isidom3 49647 affinecomb1 50019 eenglngeehlnmlem1 50055 2sphere 50066 line2 50069 itscnhlc0yqe 50076 itscnhlc0xyqsol 50082 oduoppcciso 50909 |
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