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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 4612 unielrel 5271 ovmpos 6155 caofrss 6276 caoftrn 6277 f1o2ndf1 6402 nnaord 6720 nnmord 6728 oviec 6853 pmss12g 6887 fiss 7219 pm54.43 7438 ltsopi 7583 lttrsr 8025 ltsosr 8027 aptisr 8042 mulextsr1 8044 axpre-mulext 8151 axltwlin 8289 axlttrn 8290 axltadd 8291 axmulgt0 8293 letr 8304 eqord1 8705 remulext1 8821 mulext1 8834 recexap 8875 prodge0 9076 lt2msq 9108 nnge1 9208 zltp1le 9578 uzss 9821 eluzp1m1 9824 xrletr 10087 ixxssixx 10181 zesq 10966 expcanlem 11023 expcan 11024 nn0opthd 11030 wrdind 11352 wrd2ind 11353 pfxccatin12lem3 11362 maxleast 11836 climshftlemg 11925 dvds1lem 12426 bezoutlemzz 12636 algcvg 12683 eucalgcvga 12693 rpexp12i 12790 crth 12859 pc2dvds 12966 pcmpt 12979 prmpwdvds 12991 1arith 13003 ercpbl 13477 insubm 13631 subginv 13831 rngpropd 14032 dvdsunit 14190 subrgdvds 14313 tgss 14857 neipsm 14948 ssrest 14976 cos11 15647 lgsdir2lem4 15833 gausslemma2dlem1a 15860 m1lgs 15887 |
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