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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 4930 poltletr 5188 tfrlemisucaccv 6596 tfr1onlemsucaccv 6612 tfrcllemsucaccv 6625 phplem3 7155 ssfilem 7177 ssfilemd 7179 diffitest 7191 pr1or2 7540 reapmul1 8925 apsqgt0 8931 recexaplem2 8982 nnnn0addcl 9597 un0addcl 9600 un0mulcl 9601 elz2 9720 xrltso 10208 xaddnemnf 10269 xaddnepnf 10270 fzsplit2 10465 fzsplit3 10468 fzsuc2 10496 elfzp12 10516 seqf1oglem2 10970 expp1 10996 expnegap0 10997 expcllem 11000 mulexpzap 11029 expaddzap 11033 expmulzap 11035 zzlesq 11159 bcpasc 11218 ccatass 11390 ccatrn 11391 ccatswrd 11456 ccatpfx 11487 cats1un 11507 xrltmaxsup 12039 xrmaxaddlem 12042 summodc 12166 fsumsplit 12190 fprodsplitdc 12379 ef0lem 12443 odd2np1 12656 dvdslcm 12863 lcmeq0 12865 lcmcl 12866 lcmneg 12868 lcmgcd 12872 rpexp1i 12949 pcid 13123 4sqlem16 13205 xpsfeq 13715 mulgneg 13992 mulgnn0z 14001 bposlem2 16210 lgsdir2lem4 16248 lgsdir2 16250 lgsdirnn0 16264 lgsdinn0 16265 |
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