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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 6601 tfr1onlemsucaccv 6617 tfrcllemsucaccv 6630 phplem3 7161 ssfilem 7183 ssfilemd 7185 diffitest 7197 pr1or2 7546 reapmul1 8931 apsqgt0 8937 recexaplem2 8988 nnnn0addcl 9604 un0addcl 9607 un0mulcl 9608 elz2 9725 xrltso 10214 xaddnemnf 10275 xaddnepnf 10276 fzsplit2 10471 fzsplit3 10474 fzsuc2 10502 elfzp12 10522 seqf1oglem2 10977 expp1 11003 expnegap0 11004 expcllem 11007 mulexpzap 11036 expaddzap 11040 expmulzap 11042 zzlesq 11166 bcpasc 11225 ccatass 11397 ccatrn 11398 ccatswrd 11463 ccatpfx 11494 cats1un 11514 xrltmaxsup 12047 xrmaxaddlem 12050 summodc 12174 fsumsplit 12198 fprodsplitdc 12387 ef0lem 12451 odd2np1 12664 dvdslcm 12871 lcmeq0 12873 lcmcl 12874 lcmneg 12876 lcmgcd 12880 rpexp1i 12957 pcid 13131 4sqlem16 13213 xpsfeq 13724 mulgneg 14001 mulgnn0z 14010 gsumunsnfd 14258 bposlem2 16329 lgsdir2lem4 16372 lgsdir2 16374 lgsdirnn0 16388 lgsdinn0 16389 idjudju 17269 |
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