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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 4372 fnprb 7214 fntpb 7215 eqfunresadj 7370 eloprabga 7529 ordsucuniel 7835 ordsucun 7836 mpof1o2d 8139 oeoa 8609 ereldm 8774 boxcutc 8972 mapen 9163 mapfien 9403 wemapwe 9701 sdom2en01 10383 prlem936 11135 subcan 11616 mulcan1g 11972 conjmul 12037 ltrec 12202 rebtwnz 13077 xposdif 13395 divelunit 13628 fseq1m1p1 13736 fzm1 13744 fllt 13949 hashfacen 14602 hashf1 14605 ccat0 14724 sgnmulsgn 15267 lenegsq 15493 dvdsmod 16504 bitsmod 16611 smueqlem 16665 rpexp 16903 eulerthlem2 16964 odzdvds 16978 pcelnn 17053 xpsle 17756 isepi 17920 fthmon 18109 cat1 18277 pospropd 18504 grpidpropd 18847 mgmhmpropd 18892 sgrppropd 18925 mndpropd 18956 mhmpropd 18992 grppropd 19167 ghmnsgima 19459 mndodcong 19761 odf1 19781 odf1o1 19791 sylow3lem6 19851 lsmcntzr 19899 efgredlema 19959 cmnpropd 20010 qusecsub 20054 dprdf11 20244 rngpropd 20401 ringpropd 20524 dvdsrpropd 20651 resrhm2b 20859 abvpropd 21097 isorng 21123 lmodprop2d 21204 lsspropd 21297 lmhmpropd 21353 lbspropd 21379 lvecvscan 21394 lvecvscan2 21395 chrnzr 21841 zndvds0 21861 ip2eq 21964 phlpropd 21966 assapropd 22184 qtopcn 24038 tsmsf1o 24469 xmetgt0 24682 txmetcnp 24871 metustsym 24879 nlmmul0or 25007 cnmet 25095 evth 25285 isclmp 25423 minveclem3b 25754 mbfposr 25978 itg2cn 26089 iblcnlem 26114 dvcvx 26345 ulm2 26717 efeq1 26861 dcubic 27179 mcubic 27180 dquart 27186 birthdaylem3 27286 ftalem2 27406 issqf 27468 sqff1o 27514 bposlem7 27622 lgsabs1 27668 gausslemma2dlem1a 27697 lgsquadlem2 27713 addsq2reu 27772 dchrisum0lem1 27848 sltssnb 28160 ltsrec 28192 opphllem6 29233 colhp 29253 lmiinv 29302 lmiopp 29313 wlkeq 30219 eupth2lem3lem3 30836 eupth2lem3lem6 30839 nmounbi 31383 ip2eqi 31463 hvmulcan 31679 hvsubcan2 31682 hi2eq 31712 fh2 32226 riesz4i 32670 cvbr4i 32974 sgnmulsgp 33469 xdivpnfrp 33545 qusker 33956 ellspds 33970 ply1moneq 34166 ballotlemfc0 35171 ballotlemfcc 35172 subfacp1lem5 36035 topfneec2 37236 neibastop3 37242 unccur 38619 cos2h 38627 tan2h 38628 poimirlem25 38656 poimirlem27 38658 dvasin 38715 caures 38787 ismtyima 38830 isdmn3 39101 dmecd 39335 releldmqscoss 39770 tendospcanN 42173 dochsncom 42532 quadfac 43348 sqrtcval 44734 or3or 45116 neicvgel1 45212 rusbcALT 45515 sbcoreleleqVD 45934 climreeq 46718 coseq0 46967 modmkpkne 48530 isidom3 49535 affinecomb1 49907 eenglngeehlnmlem1 49943 2sphere 49954 line2 49957 itscnhlc0yqe 49964 itscnhlc0xyqsol 49970 oduoppcciso 50797 |
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