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| Mirrors > Home > ILE Home > Th. List > 3bitrd | GIF version | ||
| Description: Deduction from transitivity of biconditional. (Contributed by NM, 13-Aug-1999.) |
| Ref | Expression |
|---|---|
| 3bitrd.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| 3bitrd.2 | ⊢ (𝜑 → (𝜒 ↔ 𝜃)) |
| 3bitrd.3 | ⊢ (𝜑 → (𝜃 ↔ 𝜏)) |
| Ref | Expression |
|---|---|
| 3bitrd | ⊢ (𝜑 → (𝜓 ↔ 𝜏)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3bitrd.1 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 2 | 3bitrd.2 | . . 3 ⊢ (𝜑 → (𝜒 ↔ 𝜃)) | |
| 3 | 1, 2 | bitrd 188 | . 2 ⊢ (𝜑 → (𝜓 ↔ 𝜃)) |
| 4 | 3bitrd.3 | . 2 ⊢ (𝜑 → (𝜃 ↔ 𝜏)) | |
| 5 | 3, 4 | bitrd 188 | 1 ⊢ (𝜑 → (𝜓 ↔ 𝜏)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: sbceqal 3098 sbcnel12g 3155 elxp4 5250 elxp5 5251 f1eq123d 5606 foeq123d 5607 f1oeq123d 5608 fnmptfvd 5782 ofrfval 6275 eloprabi 6392 fnmpoovd 6411 suppsnopdc 6450 smoeq 6521 ecidg 6833 ixpsnval 6936 mapsnend 7052 enqbreq2 7672 ltanqg 7715 caucvgprprlemexb 8022 caucvgsrlemgt1 8110 caucvgsrlemoffres 8115 ltrennb 8169 apneg 8885 mulext1 8886 apdivmuld 9087 ltdiv23 9166 lediv23 9167 halfpos 9469 addltmul 9475 div4p1lem1div2 9492 ztri3or 9620 supminfex 9929 iccf1o 10338 fzshftral 10442 fzoshftral 10584 infssuzex 10593 2tnp1ge0ge0 10661 fihashen1 11162 seq3coll 11214 s111 11319 swrdspsleq 11359 pfxeq 11388 wrd2ind 11415 cjap 11591 negfi 11913 tanaddaplem 12424 dvdssub 12524 addmodlteqALT 12545 dvdsmod 12548 oddp1even 12562 nn0o1gt2 12591 nn0oddm1d2 12595 bitscmp 12644 cncongr1 12800 cncongr2 12801 4sqlem11 13099 4sqlem17 13105 intopsn 13580 sgrp1 13624 sgrppropd 13626 issubg 13890 nmzsubg 13927 conjnmzb 13997 srg1zr 14131 ring1 14203 issubrg 14366 znf1o 14799 znleval 14801 znunit 14807 elmopn 15311 metss 15359 comet 15364 xmetxp 15372 limcmpted 15528 cnlimc 15537 lgsneg 15897 lgsne0 15911 lgsprme0 15915 lgsquadlem1 15950 lgsquadlem2 15951 2lgs 15977 2lgsoddprm 15986 edg0iedg0g 16061 wrdupgren 16091 wrdumgren 16101 vtxd0nedgbfi 16294 eupth2lem2dc 16454 eupth2lem3lem6fi 16466 eupth2lem3lem4fi 16468 |
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