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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 2706 r19.30 3104 sspss 4042 eqoreldif 4629 pwpw0 4756 sssn 4769 unissint 4914 disjiund 5076 disjxiun 5082 otsndisj 5473 otiunsndisj 5474 pwssun 5523 isso2i 5576 ordtr3 6369 ordtri2or 6423 unizlim 6447 fvclss 7196 orduniorsuc 7781 ordzsl 7796 nn0suc 7845 xpexr 7869 soseq 8109 odi 8514 swoso 8678 erdisj 8701 ordtypelem7 9439 wemapsolem 9465 domwdom 9489 iscard3 10015 ackbij1lem18 10158 fin56 10315 entric 10479 gchdomtri 10552 inttsk 10697 r1tskina 10705 psslinpr 10954 1re 11144 ssxr 11215 letric 11246 mul0or 11790 mulge0b 12026 zeo 12615 uzm1 12822 xrletri 13104 supxrgtmnf 13281 sq01 14187 ruclem3 16200 prm2orodd 16660 phiprmpw 16746 pleval2i 18300 chnind 18587 irredn0 20403 drngmul0orOLD 20738 lvecvs0or 21106 lssvs0or 21108 lspsnat 21143 lsppratlem1 21145 domnchr 21512 fctop 22969 cctop 22971 ppttop 22972 clslp 23113 restntr 23147 cnconn 23387 txindis 23599 txconn 23654 isufil2 23873 ufprim 23874 alexsubALTlem3 24014 pmltpc 25417 iundisj2 25516 limcco 25860 fta1b 26137 aalioulem2 26299 abelthlem2 26397 logreclem 26726 dchrfi 27218 2sqb 27395 nosepdmlem 27647 noetasuplem4 27700 lestric 27732 muls0ord 28177 bdayfinbndlem1 28459 tgbtwnconn1 28643 legov3 28666 coltr 28715 colline 28717 tglowdim2ln 28719 ragflat3 28774 ragperp 28785 lmieu 28852 lmicom 28856 lmimid 28862 numedglnl 29213 pthisspthorcycl 29870 nvmul0or 30721 hvmul0or 31096 atomli 32453 atordi 32455 iundisj2f 32660 iundisj2fi 32870 gsumfs2d 33122 mxidlprm 33530 ssmxidl 33534 qsdrng 33557 zarclssn 34017 signsply0 34695 cvmsdisj 35452 nepss 35900 dfon2lem6 35968 btwnconn1lem13 36281 wl-exeq 37859 eqvreldisj 39019 lsator0sp 39447 lkreqN 39616 2at0mat0 39971 trlator0 40617 dochkrshp4 41835 dochsat0 41903 lcfl6 41946 expeqidd 42757 sn-remul0ord 42840 rp-fakeimass 43939 frege124d 44188 clsk1independent 44473 mnringmulrcld 44655 pm10.57 44798 icccncfext 46315 fourierdlem70 46604 ichnreuop 47932 uzlidlring 48711 nneop 49002 mo0sn 49291 euendfunc2 50002 |
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