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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 4657 unielrel 5318 ovmpos 6215 caofrss 6338 caoftrn 6339 f1o2ndf1 6468 nnaord 6786 nnmord 6794 oviec 6919 pmss12g 6960 fiss 7316 pm54.43 7542 ltsopi 7693 lttrsr 8135 ltsosr 8137 aptisr 8152 mulextsr1 8154 axpre-mulext 8261 axltwlin 8399 axlttrn 8400 axltadd 8401 axmulgt0 8403 letr 8414 eqord1 8818 remulext1 8935 mulext1 8948 recexap 8989 prodge0 9192 lt2msq 9224 nnge1 9336 zltp1le 9710 uzss 9959 eluzp1m1 9962 xrletr 10227 ixxssixx 10321 zesq 11117 expcanlem 11175 expcan 11176 nn0opthd 11182 wrdind 11516 wrd2ind 11517 pfxccatin12lem3 11526 maxleast 12002 climshftlemg 12093 dvds1lem 12594 bezoutlemzz 12804 algcvg 12851 eucalgcvga 12861 rpexp12i 12959 crth 13031 pc2dvds 13138 pcmpt 13151 prmpwdvds 13163 1arith 13175 ercpbl 13711 insubm 13851 subginv 14043 rngpropd 14361 dvdsunit 14528 subrgdvds 14652 tgss 15289 neipsm 15380 ssrest 15408 cos11 16081 bposlem6 16316 lgsdir2lem4 16355 gausslemma2dlem1a 16382 m1lgs 16409 |
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