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| Mirrors > Home > ILE Home > Th. List > 3imtr4d | GIF version | ||
| Description: More general version of 3imtr4i 201. Useful for converting conditional definitions in a formula. (Contributed by NM, 26-Oct-1995.) |
| Ref | Expression |
|---|---|
| 3imtr4d.1 | ⊢ (𝜑 → (𝜓 → 𝜒)) |
| 3imtr4d.2 | ⊢ (𝜑 → (𝜃 ↔ 𝜓)) |
| 3imtr4d.3 | ⊢ (𝜑 → (𝜏 ↔ 𝜒)) |
| Ref | Expression |
|---|---|
| 3imtr4d | ⊢ (𝜑 → (𝜃 → 𝜏)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3imtr4d.2 | . 2 ⊢ (𝜑 → (𝜃 ↔ 𝜓)) | |
| 2 | 3imtr4d.1 | . . 3 ⊢ (𝜑 → (𝜓 → 𝜒)) | |
| 3 | 3imtr4d.3 | . . 3 ⊢ (𝜑 → (𝜏 ↔ 𝜒)) | |
| 4 | 2, 3 | sylibrd 169 | . 2 ⊢ (𝜑 → (𝜓 → 𝜏)) |
| 5 | 1, 4 | sylbid 150 | 1 ⊢ (𝜑 → (𝜃 → 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: onsucelsucr 4630 unielrel 5290 ovmpos 6177 caofrss 6298 caoftrn 6299 f1o2ndf1 6424 nnaord 6742 nnmord 6750 oviec 6875 pmss12g 6909 fiss 7264 pm54.43 7487 ltsopi 7635 lttrsr 8077 ltsosr 8079 aptisr 8094 mulextsr1 8096 axpre-mulext 8203 axltwlin 8341 axlttrn 8342 axltadd 8343 axmulgt0 8345 letr 8356 eqord1 8757 remulext1 8873 mulext1 8886 recexap 8927 prodge0 9128 lt2msq 9160 nnge1 9260 zltp1le 9632 uzss 9875 eluzp1m1 9878 xrletr 10141 ixxssixx 10235 zesq 11020 expcanlem 11077 expcan 11078 nn0opthd 11084 wrdind 11414 wrd2ind 11415 pfxccatin12lem3 11424 maxleast 11898 climshftlemg 11987 dvds1lem 12488 bezoutlemzz 12698 algcvg 12745 eucalgcvga 12755 rpexp12i 12852 crth 12921 pc2dvds 13028 pcmpt 13041 prmpwdvds 13053 1arith 13065 ercpbl 13544 insubm 13698 subginv 13898 rngpropd 14099 dvdsunit 14257 subrgdvds 14380 tgss 14928 neipsm 15019 ssrest 15047 cos11 15718 lgsdir2lem4 15904 gausslemma2dlem1a 15931 m1lgs 15958 |
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