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| Mirrors > Home > ILE Home > Th. List > jaodan | GIF version | ||
| Description: Deduction disjoining the antecedents of two implications. (Contributed by NM, 14-Oct-2005.) |
| Ref | Expression |
|---|---|
| jaodan.1 | ⊢ ((𝜑 ∧ 𝜓) → 𝜒) |
| jaodan.2 | ⊢ ((𝜑 ∧ 𝜃) → 𝜒) |
| Ref | Expression |
|---|---|
| jaodan | ⊢ ((𝜑 ∧ (𝜓 ∨ 𝜃)) → 𝜒) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | jaodan.1 | . . . 4 ⊢ ((𝜑 ∧ 𝜓) → 𝜒) | |
| 2 | 1 | ex 115 | . . 3 ⊢ (𝜑 → (𝜓 → 𝜒)) |
| 3 | jaodan.2 | . . . 4 ⊢ ((𝜑 ∧ 𝜃) → 𝜒) | |
| 4 | 3 | ex 115 | . . 3 ⊢ (𝜑 → (𝜃 → 𝜒)) |
| 5 | 2, 4 | jaod 729 | . 2 ⊢ (𝜑 → ((𝜓 ∨ 𝜃) → 𝜒)) |
| 6 | 5 | imp 124 | 1 ⊢ ((𝜑 ∧ (𝜓 ∨ 𝜃)) → 𝜒) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∨ wo 720 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 |
| This proof depends on definitions: df-bi 117 |
| This theorem is used by: mpjaodan 810 ordi 828 andi 830 dcor 948 ccase 977 mpjao3dan 1348 relop 4932 poltletr 5191 tfrlemisucaccv 6600 tfr1onlemsucaccv 6616 tfrcllemsucaccv 6629 phplem3 7159 ssfilem 7181 ssfilemd 7183 diffitest 7195 pr1or2 7546 reapmul1 8931 apsqgt0 8937 recexaplem2 8988 nnnn0addcl 9604 un0addcl 9607 un0mulcl 9608 elz2 9727 xrltso 10215 xaddnemnf 10276 xaddnepnf 10277 fzsplit2 10472 fzsplit3 10475 fzsuc2 10503 elfzp12 10523 seqf1oglem2 10978 expp1 11004 expnegap0 11005 expcllem 11008 mulexpzap 11037 expaddzap 11041 expmulzap 11043 zzlesq 11167 bcpasc 11226 ccatass 11398 ccatrn 11399 ccatswrd 11464 ccatpfx 11495 cats1un 11515 xrltmaxsup 12048 xrmaxaddlem 12051 summodc 12175 fsumsplit 12199 fprodsplitdc 12388 ef0lem 12452 odd2np1 12665 dvdslcm 12872 lcmeq0 12874 lcmcl 12875 lcmneg 12877 lcmgcd 12881 rpexp1i 12958 pcid 13132 4sqlem16 13214 xpsfeq 13725 mulgneg 14002 mulgnn0z 14011 gsumunsnfd 14259 bposlem2 16312 lgsdir2lem4 16355 lgsdir2 16357 lgsdirnn0 16371 lgsdinn0 16372 idjudju 17252 |
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