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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 1882 axi12 2791 r19.30 3338 sspss 4076 eqoreldif 4622 pwpw0 4746 sssn 4759 pwsnOLD 4831 unissint 4900 disjiund 5056 disjxiun 5063 otsndisj 5409 otiunsndisj 5410 pwssun 5456 isso2i 5508 ordtr3 6236 ordtri2or 6286 unizlim 6307 fvclss 7001 orduniorsuc 7545 ordzsl 7560 nn0suc 7606 xpexr 7623 odi 8205 swoso 8322 erdisj 8341 ordtypelem7 8988 wemapsolem 9014 domwdom 9038 iscard3 9519 ackbij1lem18 9659 fin56 9815 entric 9979 gchdomtri 10051 inttsk 10196 r1tskina 10204 psslinpr 10453 ssxr 10710 letric 10740 mul0or 11280 mulge0b 11510 zeo 12069 uzm1 12277 xrletri 12547 supxrgtmnf 12723 sq01 13587 ruclem3 15586 prm2orodd 16035 phiprmpw 16113 pleval2i 17574 irredn0 19453 drngmul0or 19523 lvecvs0or 19880 lssvs0or 19882 lspsnat 19917 lsppratlem1 19919 domnchr 20679 fctop 21612 cctop 21614 ppttop 21615 clslp 21756 restntr 21790 cnconn 22030 txindis 22242 txconn 22297 isufil2 22516 ufprim 22517 alexsubALTlem3 22657 pmltpc 24051 iundisj2 24150 limcco 24491 fta1b 24763 aalioulem2 24922 abelthlem2 25020 logreclem 25340 dchrfi 25831 2sqb 26008 tgbtwnconn1 26361 legov3 26384 coltr 26433 colline 26435 tglowdim2ln 26437 ragflat3 26492 ragperp 26503 lmieu 26570 lmicom 26574 lmimid 26580 numedglnl 26929 nvmul0or 28427 hvmul0or 28802 atomli 30159 atordi 30161 iundisj2f 30340 iundisj2fi 30520 mxidlprm 30977 ssmxidl 30979 signsply0 31821 pthisspthorcycl 32375 cvmsdisj 32517 nepss 32948 dfon2lem6 33033 soseq 33096 nosepdmlem 33187 noetalem3 33219 btwnconn1lem13 33560 wl-exeq 34789 eqvreldisj 35864 lsator0sp 36152 lkreqN 36321 2at0mat0 36676 trlator0 37322 dochkrshp4 38540 dochsat0 38608 lcfl6 38651 rp-fakeimass 39898 frege124d 40126 clsk1independent 40416 pm10.57 40723 icccncfext 42190 fourierdlem70 42481 ichnreuop 43654 uzlidlring 44220 nneop 44606 |
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