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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 7536 ltsopi 7687 lttrsr 8129 ltsosr 8131 aptisr 8146 mulextsr1 8148 axpre-mulext 8255 axltwlin 8393 axlttrn 8394 axltadd 8395 axmulgt0 8397 letr 8408 eqord1 8811 remulext1 8927 mulext1 8940 recexap 8981 prodge0 9184 lt2msq 9216 nnge1 9327 zltp1le 9699 uzss 9943 eluzp1m1 9946 xrletr 10210 ixxssixx 10304 zesq 11096 expcanlem 11153 expcan 11154 nn0opthd 11160 wrdind 11494 wrd2ind 11495 pfxccatin12lem3 11504 maxleast 11979 climshftlemg 12068 dvds1lem 12569 bezoutlemzz 12779 algcvg 12826 eucalgcvga 12836 rpexp12i 12933 crth 13002 pc2dvds 13109 pcmpt 13122 prmpwdvds 13134 1arith 13146 ercpbl 13652 insubm 13792 subginv 13984 rngpropd 14254 dvdsunit 14419 subrgdvds 14543 tgss 15164 neipsm 15255 ssrest 15283 cos11 15954 lgsdir2lem4 16150 gausslemma2dlem1a 16177 m1lgs 16204 |
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