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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 4650 unielrel 5310 ovmpos 6202 caofrss 6324 caoftrn 6325 f1o2ndf1 6454 nnaord 6772 nnmord 6780 oviec 6905 pmss12g 6946 fiss 7301 pm54.43 7526 ltsopi 7677 lttrsr 8119 ltsosr 8121 aptisr 8136 mulextsr1 8138 axpre-mulext 8245 axltwlin 8383 axlttrn 8384 axltadd 8385 axmulgt0 8387 letr 8398 eqord1 8801 remulext1 8917 mulext1 8930 recexap 8971 prodge0 9174 lt2msq 9206 nnge1 9306 zltp1le 9678 uzss 9922 eluzp1m1 9925 xrletr 10189 ixxssixx 10283 zesq 11074 expcanlem 11131 expcan 11132 nn0opthd 11138 wrdind 11472 wrd2ind 11473 pfxccatin12lem3 11482 maxleast 11957 climshftlemg 12046 dvds1lem 12547 bezoutlemzz 12757 algcvg 12804 eucalgcvga 12814 rpexp12i 12911 crth 12980 pc2dvds 13087 pcmpt 13100 prmpwdvds 13112 1arith 13124 ercpbl 13629 insubm 13769 subginv 13961 rngpropd 14229 dvdsunit 14392 subrgdvds 14516 tgss 15087 neipsm 15178 ssrest 15206 cos11 15877 lgsdir2lem4 16064 gausslemma2dlem1a 16091 m1lgs 16118 |
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