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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 | pm2.54 858 | . 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 853 |
| 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 208 df-or 854 |
| This theorem is referenced by: orc 873 olc 874 pm2.68 906 pm4.79 1011 19.30 1888 axi12 2710 r19.30 3107 sspss 4040 eqoreldif 4624 pwpw0 4751 sssn 4764 unissint 4909 disjiund 5070 disjxiun 5076 otsndisj 5467 otiunsndisj 5468 pwssun 5517 isso2i 5570 ordtr3 6363 ordtri2or 6417 unizlim 6441 fvclss 7192 orduniorsuc 7777 ordzsl 7792 nn0suc 7841 xpexr 7865 soseq 8106 odi 8511 swoso 8675 erdisj 8698 ordtypelem7 9436 wemapsolem 9462 domwdom 9486 iscard3 10013 ackbij1lem18 10156 fin56 10313 entric 10477 gchdomtri 10550 inttsk 10695 r1tskina 10703 psslinpr 10952 1re 11142 ssxr 11213 letric 11244 mul0or 11788 mulge0b 12024 zeo 12613 uzm1 12820 xrletri 13102 supxrgtmnf 13279 sq01 14185 ruclem3 16198 prm2orodd 16658 phiprmpw 16744 pleval2i 18298 chnind 18585 irredn0 20401 drngmul0orOLD 20740 lvecvs0or 21108 lssvs0or 21110 lspsnat 21145 lsppratlem1 21147 domnchr 21514 fctop 22994 cctop 22996 ppttop 22997 clslp 23138 restntr 23172 cnconn 23412 txindis 23624 txconn 23679 isufil2 23898 ufprim 23899 alexsubALTlem3 24039 pmltpc 25442 iundisj2 25541 limcco 25885 fta1b 26162 aalioulem2 26324 abelthlem2 26422 logreclem 26751 dchrfi 27243 2sqb 27420 nosepdmlem 27672 noetasuplem4 27725 lestric 27757 muls0ord 28202 bdayfinbndlem1 28484 tgbtwnconn1 28668 legov3 28691 coltr 28740 colline 28742 tglowdim2ln 28744 ragflat3 28799 ragperp 28810 lmieu 28877 lmicom 28881 lmimid 28887 numedglnl 29238 pthisspthorcycl 29895 nvmul0or 30746 hvmul0or 31121 atomli 32478 atordi 32480 iundisj2f 32686 iundisj2fi 32896 gsumfs2d 33149 mxidlprm 33560 ssmxidl 33564 qsdrng 33587 zarclssn 34064 signsply0 34742 cvmsdisj 35505 nepss 35953 dfon2lem6 36021 btwnconn1lem13 36334 wl-exeq 37912 eqvreldisj 39072 lsator0sp 39500 lkreqN 39669 2at0mat0 40024 trlator0 40670 dochkrshp4 41888 dochsat0 41956 lcfl6 41999 expeqidd 42809 sn-remul0ord 42892 rp-fakeimass 43963 frege124d 44212 clsk1independent 44497 mnringmulrcld 44679 pm10.57 44822 icccncfext 46337 fourierdlem70 46626 ichnreuop 47954 uzlidlring 48733 nneop 49024 mo0sn 49313 euendfunc2 50024 |
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