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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 4606 unielrel 5264 ovmpos 6144 caofrss 6266 caoftrn 6267 f1o2ndf1 6392 nnaord 6676 nnmord 6684 oviec 6809 pmss12g 6843 fiss 7175 pm54.43 7394 ltsopi 7539 lttrsr 7981 ltsosr 7983 aptisr 7998 mulextsr1 8000 axpre-mulext 8107 axltwlin 8246 axlttrn 8247 axltadd 8248 axmulgt0 8250 letr 8261 eqord1 8662 remulext1 8778 mulext1 8791 recexap 8832 prodge0 9033 lt2msq 9065 nnge1 9165 zltp1le 9533 uzss 9776 eluzp1m1 9779 xrletr 10042 ixxssixx 10136 zesq 10919 expcanlem 10976 expcan 10977 nn0opthd 10983 wrdind 11302 wrd2ind 11303 pfxccatin12lem3 11312 maxleast 11773 climshftlemg 11862 dvds1lem 12362 bezoutlemzz 12572 algcvg 12619 eucalgcvga 12629 rpexp12i 12726 crth 12795 pc2dvds 12902 pcmpt 12915 prmpwdvds 12927 1arith 12939 ercpbl 13413 insubm 13567 subginv 13767 rngpropd 13967 dvdsunit 14125 subrgdvds 14248 tgss 14786 neipsm 14877 ssrest 14905 cos11 15576 lgsdir2lem4 15759 gausslemma2dlem1a 15786 m1lgs 15813 |
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