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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 |
| This proof depends on syntax axioms: → wi 4 ↔ wb 105 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 |
| This theorem is used by: onsucelsucr 4655 unielrel 5315 ovmpos 6212 caofrss 6334 caoftrn 6335 f1o2ndf1 6464 nnaord 6782 nnmord 6790 oviec 6915 pmss12g 6956 fiss 7311 pm54.43 7537 ltsopi 7688 lttrsr 8130 ltsosr 8132 aptisr 8147 mulextsr1 8149 axpre-mulext 8256 axltwlin 8394 axlttrn 8395 axltadd 8396 axmulgt0 8398 letr 8409 eqord1 8813 remulext1 8930 mulext1 8943 recexap 8984 prodge0 9187 lt2msq 9219 nnge1 9330 zltp1le 9704 uzss 9953 eluzp1m1 9956 xrletr 10221 ixxssixx 10315 zesq 11111 expcanlem 11169 expcan 11170 nn0opthd 11176 wrdind 11510 wrd2ind 11511 pfxccatin12lem3 11520 maxleast 11996 climshftlemg 12087 dvds1lem 12588 bezoutlemzz 12798 algcvg 12845 eucalgcvga 12855 rpexp12i 12953 crth 13025 pc2dvds 13132 pcmpt 13145 prmpwdvds 13157 1arith 13169 ercpbl 13705 insubm 13845 subginv 14037 rngpropd 14338 dvdsunit 14503 subrgdvds 14627 tgss 15255 neipsm 15346 ssrest 15374 cos11 16046 bposlem6 16277 lgsdir2lem4 16316 gausslemma2dlem1a 16343 m1lgs 16370 |
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