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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 3101 sbcnel12g 3158 elxp4 5255 elxp5 5256 f1eq123d 5611 foeq123d 5612 f1oeq123d 5613 fnmptfvd 5787 ofrfval 6284 eloprabi 6405 fnmpoovd 6424 suppsnopdc 6463 smoeq 6534 ecidg 6846 ixpsnval 6949 mapsnend 7065 enqbreq2 7688 ltanqg 7731 caucvgprprlemexb 8038 caucvgsrlemgt1 8126 caucvgsrlemoffres 8131 ltrennb 8185 apneg 8903 mulext1 8904 apdivmuld 9107 ltdiv23 9186 lediv23 9187 halfpos 9489 addltmul 9495 div4p1lem1div2 9512 ztri3or 9640 supminfex 9950 iccf1o 10360 fzsplit3 10410 fzshftral 10467 fzoshftral 10609 infssuzex 10618 2tnp1ge0ge0 10688 fihashen1 11190 seq3coll 11242 s111 11347 swrdspsleq 11387 pfxeq 11416 wrd2ind 11443 cjap 11619 negfi 11941 tanaddaplem 12452 dvdssub 12552 addmodlteqALT 12573 dvdsmod 12576 oddp1even 12590 nn0o1gt2 12619 nn0oddm1d2 12623 bitscmp 12672 cncongr1 12828 cncongr2 12829 4sqlem11 13127 4sqlem17 13133 ballotfilemsima 13206 intopsn 13633 sgrp1 13677 sgrppropd 13679 issubg 13929 nmzsubg 13966 conjnmzb 14036 rng1zrlem 14201 ring1 14305 issubrg 14470 znf1o 14928 znleval 14930 znunit 14936 elmopn 15440 metss 15488 comet 15493 xmetxp 15501 limcmpted 15657 cnlimc 15666 lgsneg 16026 lgsne0 16040 lgsprme0 16044 lgsquadlem1 16079 lgsquadlem2 16080 2lgs 16106 2lgsoddprm 16115 edg0iedg0g 16190 wrdupgren 16220 wrdumgren 16230 vtxd0nedgbfi 16423 eupth2lem2dc 16583 eupth2lem3lem6fi 16595 eupth2lem3lem4fi 16597 |
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