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| Mirrors > Home > MPE Home > Th. List > orrd | Structured version Visualization version GIF version | ||
| Description: Deduce disjunction from implication. (Contributed by NM, 27-Nov-1995.) |
| Ref | Expression |
|---|---|
| orrd.1 | ⊢ (𝜑 → (¬ 𝜓 → 𝜒)) |
| Ref | Expression |
|---|---|
| orrd | ⊢ (𝜑 → (𝜓 ∨ 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | orrd.1 | . 2 ⊢ (𝜑 → (¬ 𝜓 → 𝜒)) | |
| 2 | pm2.54 853 | . 2 ⊢ ((¬ 𝜓 → 𝜒) → (𝜓 ∨ 𝜒)) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝜑 → (𝜓 ∨ 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∨ wo 848 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This theorem depends on definitions: df-bi 207 df-or 849 |
| This theorem is referenced by: orc 868 olc 869 pm2.68 901 pm4.79 1006 19.30 1883 axi12 2707 r19.30 3105 sspss 4043 eqoreldif 4630 pwpw0 4757 sssn 4770 unissint 4915 disjiund 5077 disjxiun 5083 otsndisj 5467 otiunsndisj 5468 pwssun 5516 isso2i 5569 ordtr3 6363 ordtri2or 6417 unizlim 6441 fvclss 7189 orduniorsuc 7774 ordzsl 7789 nn0suc 7838 xpexr 7862 soseq 8102 odi 8507 swoso 8671 erdisj 8694 ordtypelem7 9432 wemapsolem 9458 domwdom 9482 iscard3 10006 ackbij1lem18 10149 fin56 10306 entric 10470 gchdomtri 10543 inttsk 10688 r1tskina 10696 psslinpr 10945 1re 11135 ssxr 11206 letric 11237 mul0or 11781 mulge0b 12017 zeo 12606 uzm1 12813 xrletri 13095 supxrgtmnf 13272 sq01 14178 ruclem3 16191 prm2orodd 16651 phiprmpw 16737 pleval2i 18291 chnind 18578 irredn0 20394 drngmul0orOLD 20729 lvecvs0or 21098 lssvs0or 21100 lspsnat 21135 lsppratlem1 21137 domnchr 21522 fctop 22979 cctop 22981 ppttop 22982 clslp 23123 restntr 23157 cnconn 23397 txindis 23609 txconn 23664 isufil2 23883 ufprim 23884 alexsubALTlem3 24024 pmltpc 25427 iundisj2 25526 limcco 25870 fta1b 26147 aalioulem2 26310 abelthlem2 26410 logreclem 26739 dchrfi 27232 2sqb 27409 nosepdmlem 27661 noetasuplem4 27714 lestric 27746 muls0ord 28191 bdayfinbndlem1 28473 tgbtwnconn1 28657 legov3 28680 coltr 28729 colline 28731 tglowdim2ln 28733 ragflat3 28788 ragperp 28799 lmieu 28866 lmicom 28870 lmimid 28876 numedglnl 29227 pthisspthorcycl 29885 nvmul0or 30736 hvmul0or 31111 atomli 32468 atordi 32470 iundisj2f 32675 iundisj2fi 32885 gsumfs2d 33137 mxidlprm 33545 ssmxidl 33549 qsdrng 33572 zarclssn 34033 signsply0 34711 cvmsdisj 35468 nepss 35916 dfon2lem6 35984 btwnconn1lem13 36297 wl-exeq 37873 eqvreldisj 39033 lsator0sp 39461 lkreqN 39630 2at0mat0 39985 trlator0 40631 dochkrshp4 41849 dochsat0 41917 lcfl6 41960 expeqidd 42771 sn-remul0ord 42854 rp-fakeimass 43957 frege124d 44206 clsk1independent 44491 mnringmulrcld 44673 pm10.57 44816 icccncfext 46333 fourierdlem70 46622 ichnreuop 47944 uzlidlring 48723 nneop 49014 mo0sn 49303 euendfunc2 50014 |
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