| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 4606 unielrel 5264 ovmpos 6145 caofrss 6267 caoftrn 6268 f1o2ndf1 6393 nnaord 6677 nnmord 6685 oviec 6810 pmss12g 6844 fiss 7176 pm54.43 7395 ltsopi 7540 lttrsr 7982 ltsosr 7984 aptisr 7999 mulextsr1 8001 axpre-mulext 8108 axltwlin 8247 axlttrn 8248 axltadd 8249 axmulgt0 8251 letr 8262 eqord1 8663 remulext1 8779 mulext1 8792 recexap 8833 prodge0 9034 lt2msq 9066 nnge1 9166 zltp1le 9534 uzss 9777 eluzp1m1 9780 xrletr 10043 ixxssixx 10137 zesq 10921 expcanlem 10978 expcan 10979 nn0opthd 10985 wrdind 11307 wrd2ind 11308 pfxccatin12lem3 11317 maxleast 11791 climshftlemg 11880 dvds1lem 12381 bezoutlemzz 12591 algcvg 12638 eucalgcvga 12648 rpexp12i 12745 crth 12814 pc2dvds 12921 pcmpt 12934 prmpwdvds 12946 1arith 12958 ercpbl 13432 insubm 13586 subginv 13786 rngpropd 13987 dvdsunit 14145 subrgdvds 14268 tgss 14806 neipsm 14897 ssrest 14925 cos11 15596 lgsdir2lem4 15779 gausslemma2dlem1a 15806 m1lgs 15833 |
| Copyright terms: Public domain | W3C validator |