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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 724 | . 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 715 |
| 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 716 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: mpjaodan 805 ordi 823 andi 825 dcor 943 ccase 972 mpjao3dan 1343 relop 4880 poltletr 5137 tfrlemisucaccv 6491 tfr1onlemsucaccv 6507 tfrcllemsucaccv 6520 phplem3 7040 ssfilem 7062 ssfilemd 7064 diffitest 7076 pr1or2 7399 reapmul1 8775 apsqgt0 8781 recexaplem2 8832 nnnn0addcl 9432 un0addcl 9435 un0mulcl 9436 elz2 9551 xrltso 10031 xaddnemnf 10092 xaddnepnf 10093 fzsplit2 10285 fzsuc2 10314 elfzp12 10334 seqf1oglem2 10783 expp1 10809 expnegap0 10810 expcllem 10813 mulexpzap 10842 expaddzap 10846 expmulzap 10848 zzlesq 10971 bcpasc 11029 ccatass 11189 ccatrn 11190 ccatswrd 11255 ccatpfx 11286 cats1un 11306 xrltmaxsup 11822 xrmaxaddlem 11825 summodc 11949 fsumsplit 11973 fprodsplitdc 12162 ef0lem 12226 odd2np1 12439 dvdslcm 12646 lcmeq0 12648 lcmcl 12649 lcmneg 12651 lcmgcd 12655 rpexp1i 12731 pcid 12902 4sqlem16 12984 xpsfeq 13433 mulgneg 13732 mulgnn0z 13741 lgsdir2lem4 15766 lgsdir2 15768 lgsdirnn0 15782 lgsdinn0 15783 |
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