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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 4373 fnprb 7206 fntpb 7207 eqfunresadj 7362 eloprabga 7521 ordsucuniel 7824 ordsucun 7825 mpof1o2d 8126 oeoa 8590 ereldm 8755 boxcutc 8953 mapen 9144 mapfien 9384 wemapwe 9682 sdom2en01 10361 prlem936 11113 subcan 11594 mulcan1g 11950 conjmul 12015 ltrec 12180 rebtwnz 13055 xposdif 13373 divelunit 13606 fseq1m1p1 13713 fzm1 13721 fllt 13926 hashfacen 14579 hashf1 14582 ccat0 14701 sgnmulsgn 15242 lenegsq 15468 dvdsmod 16479 bitsmod 16586 smueqlem 16640 rpexp 16878 eulerthlem2 16939 odzdvds 16953 pcelnn 17028 xpsle 17731 isepi 17895 fthmon 18084 cat1 18252 pospropd 18479 grpidpropd 18822 mgmhmpropd 18867 sgrppropd 18900 mndpropd 18931 mhmpropd 18967 grppropd 19142 ghmnsgima 19434 mndodcong 19736 odf1 19756 odf1o1 19766 sylow3lem6 19826 lsmcntzr 19874 efgredlema 19934 cmnpropd 19985 qusecsub 20029 dprdf11 20219 rngpropd 20376 ringpropd 20499 dvdsrpropd 20626 resrhm2b 20834 abvpropd 21072 isorng 21098 lmodprop2d 21179 lsspropd 21272 lmhmpropd 21328 lbspropd 21354 lvecvscan 21369 lvecvscan2 21370 chrnzr 21816 zndvds0 21836 ip2eq 21939 phlpropd 21941 assapropd 22159 qtopcn 24013 tsmsf1o 24444 xmetgt0 24657 txmetcnp 24846 metustsym 24854 nlmmul0or 24982 cnmet 25070 evth 25260 isclmp 25398 minveclem3b 25729 mbfposr 25953 itg2cn 26064 iblcnlem 26089 dvcvx 26320 ulm2 26694 efeq1 26838 dcubic 27156 mcubic 27157 dquart 27163 birthdaylem3 27263 ftalem2 27383 issqf 27445 sqff1o 27491 bposlem7 27599 lgsabs1 27645 gausslemma2dlem1a 27674 lgsquadlem2 27690 addsq2reu 27749 dchrisum0lem1 27825 sltssnb 28137 ltsrec 28169 opphllem6 29210 colhp 29230 lmiinv 29279 lmiopp 29290 wlkeq 30196 eupth2lem3lem3 30813 eupth2lem3lem6 30816 nmounbi 31360 ip2eqi 31440 hvmulcan 31656 hvsubcan2 31659 hi2eq 31689 fh2 32203 riesz4i 32647 cvbr4i 32951 sgnmulsgp 33405 xdivpnfrp 33481 qusker 33892 ellspds 33906 ply1moneq 34102 ballotlemfc0 35108 ballotlemfcc 35109 subfacp1lem5 35918 topfneec2 37114 neibastop3 37120 unccur 38494 cos2h 38502 tan2h 38503 poimirlem25 38531 poimirlem27 38533 dvasin 38590 caures 38662 ismtyima 38705 isdmn3 38976 dmecd 39210 releldmqscoss 39645 tendospcanN 42048 dochsncom 42407 quadfac 43223 sqrtcval 44600 or3or 44982 neicvgel1 45078 rusbcALT 45381 sbcoreleleqVD 45800 climreeq 46569 coseq0 46818 modmkpkne 48381 isidom3 49386 affinecomb1 49758 eenglngeehlnmlem1 49793 2sphere 49805 line2 49808 itscnhlc0yqe 49815 itscnhlc0xyqsol 49821 oduoppcciso 50618 |
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