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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 3107 sbcnel12g 3164 elxp4 5270 elxp5 5271 f1eq123d 5626 foeq123d 5627 f1oeq123d 5628 fnmptfvd 5804 ofrfval 6301 eloprabi 6422 fnmpoovd 6441 suppsnopdc 6480 smoeq 6551 ecidg 6863 ixpsnval 6973 mapsnend 7089 enqbreq2 7714 ltanqg 7757 caucvgprprlemexb 8064 caucvgsrlemgt1 8152 caucvgsrlemoffres 8157 ltrennb 8211 apneg 8929 mulext1 8930 apdivmuld 9133 ltdiv23 9212 lediv23 9213 halfpos 9515 addltmul 9521 div4p1lem1div2 9538 ztri3or 9666 supminfex 9976 iccf1o 10386 fzsplit3 10436 fzshftral 10493 fzoshftral 10635 infssuzex 10644 2tnp1ge0ge0 10714 fihashen1 11216 seq3coll 11272 s111 11377 swrdspsleq 11417 pfxeq 11446 wrd2ind 11473 cjap 11650 negfi 11972 tanaddaplem 12483 dvdssub 12583 addmodlteqALT 12604 dvdsmod 12607 oddp1even 12621 nn0o1gt2 12650 nn0oddm1d2 12654 bitscmp 12703 cncongr1 12859 cncongr2 12860 4sqlem11 13158 4sqlem17 13164 ballotfilemsima 13237 intopsn 13664 sgrp1 13703 sgrppropd 13705 issubg 13953 nmzsubg 13990 conjnmzb 14060 rng1zrlem 14233 ring1 14337 issubrg 14502 znf1o 14958 znleval 14960 znunit 14966 elmopn 15470 metss 15518 comet 15523 xmetxp 15531 limcmpted 15687 cnlimc 15696 lgsneg 16057 lgsne0 16071 lgsprme0 16075 lgsquadlem1 16110 lgsquadlem2 16111 2lgs 16137 2lgsoddprm 16146 edg0iedg0g 16221 wrdupgren 16251 wrdumgren 16261 vtxd0nedgbfi 16454 eupth2lem2dc 16614 eupth2lem3lem6fi 16626 eupth2lem3lem4fi 16628 |
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