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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 7211 fntpb 7212 eqfunresadj 7367 eloprabga 7526 ordsucuniel 7824 ordsucun 7825 mpof1o2d 8127 oeoa 8589 ereldm 8754 boxcutc 8952 mapen 9143 mapfien 9382 wemapwe 9680 sdom2en01 10308 prlem936 11060 subcan 11541 mulcan1g 11895 conjmul 11960 ltrec 12125 rebtwnz 13000 xposdif 13318 divelunit 13551 fseq1m1p1 13658 fzm1 13666 fllt 13871 hashfacen 14523 hashf1 14526 ccat0 14645 sgnmulsgn 15186 lenegsq 15412 dvdsmod 16425 bitsmod 16532 smueqlem 16586 rpexp 16819 eulerthlem2 16879 odzdvds 16893 pcelnn 16968 xpsle 17671 isepi 17835 fthmon 18024 cat1 18192 pospropd 18419 grpidpropd 18761 mgmhmpropd 18806 sgrppropd 18839 mndpropd 18870 mhmpropd 18906 grppropd 19081 ghmnsgima 19373 mndodcong 19675 odf1 19695 odf1o1 19705 sylow3lem6 19765 lsmcntzr 19813 efgredlema 19873 cmnpropd 19924 qusecsub 19968 dprdf11 20158 rngpropd 20315 ringpropd 20436 dvdsrpropd 20563 resrhm2b 20770 abvpropd 21007 isorng 21033 lmodprop2d 21114 lsspropd 21207 lmhmpropd 21263 lbspropd 21289 lvecvscan 21304 lvecvscan2 21305 chrnzr 21749 zndvds0 21769 ip2eq 21872 phlpropd 21874 assapropd 22092 qtopcn 23946 tsmsf1o 24377 xmetgt0 24590 txmetcnp 24779 metustsym 24787 nlmmul0or 24915 cnmet 25003 evth 25193 isclmp 25331 minveclem3b 25662 mbfposr 25886 itg2cn 25997 iblcnlem 26023 dvcvx 26254 ulm2 26628 efeq1 26773 dcubic 27091 mcubic 27092 dquart 27098 birthdaylem3 27198 ftalem2 27318 issqf 27380 sqff1o 27426 bposlem7 27534 lgsabs1 27580 gausslemma2dlem1a 27609 lgsquadlem2 27625 addsq2reu 27684 dchrisum0lem1 27760 sltssnb 28042 ltsrec 28074 opphllem6 29115 colhp 29135 lmiinv 29184 lmiopp 29195 wlkeq 30101 eupth2lem3lem3 30718 eupth2lem3lem6 30721 nmounbi 31265 ip2eqi 31345 hvmulcan 31561 hvsubcan2 31564 hi2eq 31594 fh2 32108 riesz4i 32552 cvbr4i 32856 sgnmulsgp 33310 xdivpnfrp 33386 qusker 33797 ellspds 33811 ply1moneq 34006 ballotlemfc0 35012 ballotlemfcc 35013 subfacp1lem5 35771 topfneec2 36983 neibastop3 36989 unccur 38365 cos2h 38373 tan2h 38374 poimirlem25 38402 poimirlem27 38404 dvasin 38461 caures 38518 ismtyima 38561 isdmn3 38832 dmecd 39066 releldmqscoss 39501 tendospcanN 41904 dochsncom 42263 quadfac 43079 sqrtcval 44489 or3or 44871 neicvgel1 44967 rusbcALT 45270 sbcoreleleqVD 45689 climreeq 46451 coseq0 46700 modmkpkne 48263 isidom3 49268 affinecomb1 49640 eenglngeehlnmlem1 49675 2sphere 49687 line2 49690 itscnhlc0yqe 49697 itscnhlc0xyqsol 49703 oduoppcciso 50500 |
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