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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 4383 fnprb 7213 fntpb 7214 eqfunresadj 7371 eloprabga 7532 ordsucuniel 7829 ordsucun 7830 mpof1o2d 8130 oeoa 8592 ereldm 8757 boxcutc 8948 mapen 9139 mapfien 9378 wemapwe 9676 sdom2en01 10304 prlem936 11050 subcan 11531 mulcan1g 11885 conjmul 11950 ltrec 12115 rebtwnz 12989 xposdif 13306 divelunit 13539 fseq1m1p1 13646 fzm1 13654 fllt 13859 hashfacen 14511 hashf1 14514 ccat0 14633 sgnmulsgn 15172 lenegsq 15398 dvdsmod 16412 bitsmod 16519 smueqlem 16573 rpexp 16806 eulerthlem2 16866 odzdvds 16880 pcelnn 16955 xpsle 17658 isepi 17822 fthmon 18011 cat1 18179 pospropd 18406 grpidpropd 18745 mgmhmpropd 18781 sgrppropd 18814 mndpropd 18842 mhmpropd 18875 grppropd 19043 ghmnsgima 19335 mndodcong 19637 odf1 19657 odf1o1 19667 sylow3lem6 19727 lsmcntzr 19775 efgredlema 19835 cmnpropd 19886 qusecsub 19930 dprdf11 20120 rngpropd 20277 ringpropd 20397 dvdsrpropd 20524 resrhm2b 20731 abvpropd 20968 isorng 20994 lmodprop2d 21075 lsspropd 21168 lmhmpropd 21224 lbspropd 21250 lvecvscan 21265 lvecvscan2 21266 chrnzr 21710 zndvds0 21730 ip2eq 21833 phlpropd 21835 assapropd 22051 qtopcn 23901 tsmsf1o 24332 xmetgt0 24545 txmetcnp 24734 metustsym 24742 nlmmul0or 24870 cnmet 24958 evth 25148 isclmp 25286 minveclem3b 25617 mbfposr 25841 itg2cn 25952 iblcnlem 25978 dvcvx 26209 ulm2 26578 efeq1 26723 dcubic 27041 mcubic 27042 dquart 27048 birthdaylem3 27148 ftalem2 27268 issqf 27330 sqff1o 27376 bposlem7 27484 lgsabs1 27530 gausslemma2dlem1a 27559 lgsquadlem2 27575 addsq2reu 27634 dchrisum0lem1 27710 sltssnb 27992 ltsrec 28024 opphllem6 29063 colhp 29082 lmiinv 29131 lmiopp 29142 wlkeq 30013 eupth2lem3lem3 30611 eupth2lem3lem6 30614 nmounbi 31158 ip2eqi 31238 hvmulcan 31454 hvsubcan2 31457 hi2eq 31487 fh2 32001 riesz4i 32445 cvbr4i 32749 sgnmulsgp 33206 xdivpnfrp 33282 qusker 33693 ellspds 33707 ply1moneq 33902 ballotlemfc0 34907 ballotlemfcc 34908 subfacp1lem5 35689 topfneec2 36900 neibastop3 36906 unccur 38287 cos2h 38295 tan2h 38296 poimirlem25 38329 poimirlem27 38331 dvasin 38388 caures 38444 ismtyima 38487 isdmn3 38758 dmecd 38992 releldmqscoss 39427 tendospcanN 41830 dochsncom 42189 quadfac 43005 sqrtcval 44400 or3or 44782 neicvgel1 44878 rusbcALT 45181 sbcoreleleqVD 45600 climreeq 46362 coseq0 46611 modmkpkne 48137 isidom3 49143 affinecomb1 49515 eenglngeehlnmlem1 49550 2sphere 49562 line2 49565 itscnhlc0yqe 49572 itscnhlc0xyqsol 49578 oduoppcciso 50377 |
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