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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 722 | . 2 ⊢ (𝜑 → ((𝜓 ∨ 𝜃) → 𝜒)) |
| 6 | 5 | imp 124 | 1 ⊢ ((𝜑 ∧ (𝜓 ∨ 𝜃)) → 𝜒) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∨ wo 713 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: mpjaodan 803 ordi 821 andi 823 dcor 941 ccase 970 mpjao3dan 1341 relop 4878 poltletr 5135 tfrlemisucaccv 6486 tfr1onlemsucaccv 6502 tfrcllemsucaccv 6515 phplem3 7035 ssfilem 7057 diffitest 7069 pr1or2 7390 reapmul1 8765 apsqgt0 8771 recexaplem2 8822 nnnn0addcl 9422 un0addcl 9425 un0mulcl 9426 elz2 9541 xrltso 10021 xaddnemnf 10082 xaddnepnf 10083 fzsplit2 10275 fzsuc2 10304 elfzp12 10324 seqf1oglem2 10772 expp1 10798 expnegap0 10799 expcllem 10802 mulexpzap 10831 expaddzap 10835 expmulzap 10837 zzlesq 10960 bcpasc 11018 ccatass 11175 ccatrn 11176 ccatswrd 11241 ccatpfx 11272 cats1un 11292 xrltmaxsup 11808 xrmaxaddlem 11811 summodc 11934 fsumsplit 11958 fprodsplitdc 12147 ef0lem 12211 odd2np1 12424 dvdslcm 12631 lcmeq0 12633 lcmcl 12634 lcmneg 12636 lcmgcd 12640 rpexp1i 12716 pcid 12887 4sqlem16 12969 xpsfeq 13418 mulgneg 13717 mulgnn0z 13726 lgsdir2lem4 15750 lgsdir2 15752 lgsdirnn0 15766 lgsdinn0 15767 |
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