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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 | pm2.54 848 | . 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 843 |
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 209 df-or 844 |
This theorem is referenced by: orc 863 olc 864 pm2.68 897 pm4.79 1000 19.30 1878 axi12 2789 axi12OLD 2790 axbndOLD 2792 r19.30 3338 sspss 4075 eqoreldif 4615 pwpw0 4739 sssn 4752 pwsnALT 4824 unissint 4892 disjiund 5048 disjxiun 5055 otsndisj 5401 otiunsndisj 5402 pwssun 5449 isso2i 5502 ordtr3 6230 ordtri2or 6280 unizlim 6301 fvclss 6995 orduniorsuc 7539 ordzsl 7554 nn0suc 7600 xpexr 7617 odi 8199 swoso 8316 erdisj 8335 ordtypelem7 8982 wemapsolem 9008 domwdom 9032 iscard3 9513 ackbij1lem18 9653 fin56 9809 entric 9973 gchdomtri 10045 inttsk 10190 r1tskina 10198 psslinpr 10447 ssxr 10704 letric 10734 mul0or 11274 mulge0b 11504 zeo 12062 uzm1 12270 xrletri 12540 supxrgtmnf 12716 sq01 13580 ruclem3 15580 prm2orodd 16029 phiprmpw 16107 pleval2i 17568 irredn0 19447 drngmul0or 19517 lvecvs0or 19874 lssvs0or 19876 lspsnat 19911 lsppratlem1 19913 domnchr 20673 fctop 21606 cctop 21608 ppttop 21609 clslp 21750 restntr 21784 cnconn 22024 txindis 22236 txconn 22291 isufil2 22510 ufprim 22511 alexsubALTlem3 22651 pmltpc 24045 iundisj2 24144 limcco 24485 fta1b 24757 aalioulem2 24916 abelthlem2 25014 logreclem 25334 dchrfi 25825 2sqb 26002 tgbtwnconn1 26355 legov3 26378 coltr 26427 colline 26429 tglowdim2ln 26431 ragflat3 26486 ragperp 26497 lmieu 26564 lmicom 26568 lmimid 26574 numedglnl 26923 nvmul0or 28421 hvmul0or 28796 atomli 30153 atordi 30155 iundisj2f 30334 iundisj2fi 30514 mxidlprm 30972 ssmxidl 30974 signsply0 31816 pthisspthorcycl 32370 cvmsdisj 32512 nepss 32943 dfon2lem6 33028 soseq 33091 nosepdmlem 33182 noetalem3 33214 btwnconn1lem13 33555 wl-exeq 34768 eqvreldisj 35843 lsator0sp 36131 lkreqN 36300 2at0mat0 36655 trlator0 37301 dochkrshp4 38519 dochsat0 38587 lcfl6 38630 rp-fakeimass 39871 frege124d 40099 clsk1independent 40389 pm10.57 40696 icccncfext 42163 fourierdlem70 42455 ichnreuop 43628 uzlidlring 44194 nneop 44580 |
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