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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 | pm2.54 865 | . 2 ⊢ ((¬ 𝜓 → 𝜒) → (𝜓 ∨ 𝜒)) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝜑 → (𝜓 ∨ 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∨ wo 860 |
| 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 210 df-or 861 |
| This theorem is referenced by: orc 880 olc 881 pm2.68 913 pm4.79 1019 19.30 1904 axi12 2735 r19.30 3132 sspss 4058 eqoreldif 4647 pwpw0 4774 sssn 4787 unissint 4932 disjiund 5095 disjxiun 5101 otsndisj 5492 otiunsndisj 5493 pwssun 5543 isso2i 5596 ordtr3 6396 ordtri2or 6450 unizlim 6474 fvclss 7229 orduniorsuc 7814 ordzsl 7829 nn0suc 7879 xpexr 7903 soseq 8143 odi 8552 swoso 8717 erdisj 8740 ordtypelem7 9474 wemapsolem 9500 domwdom 9524 iscard3 10065 ackbij1lem18 10207 fin56 10365 entric 10529 gchdomtri 10602 inttsk 10747 r1tskina 10755 psslinpr 11004 1re 11196 ssxr 11267 letric 11298 mul0or 11842 mulge0b 12073 zeo 12670 uzm1 12884 xrletri 13166 supxrgtmnf 13343 sq01 14249 ruclem3 16277 prm2orodd 16737 phiprmpw 16823 pleval2i 18378 chnind 18665 irredn0 20493 lvecvs0or 21198 lssvs0or 21200 lspsnat 21235 lsppratlem1 21237 domnchr 21639 fctop 23118 cctop 23120 ppttop 23121 clslp 23262 restntr 23296 cnconn 23536 txindis 23748 txconn 23803 isufil2 24022 ufprim 24023 alexsubALTlem3 24163 pmltpc 25566 iundisj2 25665 limcco 26009 fta1b 26286 aalioulem2 26451 abelthlem2 26549 logreclem 26881 dchrfi 27373 2sqb 27550 nosepdmlem 27801 noetasuplem4 27854 lestric 27886 muls0ord 28332 bdayfinbndlem1 28614 tgbtwnconn1 28798 legov3 28821 coltr 28871 colline 28873 tglowdim2ln 28875 ragflat3 28933 ragperp 28944 lmieu 29032 lmicom 29036 lmimid 29042 numedglnl 29399 pthisspthorcycl 30056 nvmul0or 30907 hvmul0or 31282 atomli 32639 atordi 32641 iundisj2f 32841 iundisj2fi 33050 gsumfs2d 33289 mxidlprm 33665 ssmxidl 33669 qsdrng 33691 dflringlem3 33698 dflring4 33700 zarclssn 34175 signsply0 34850 cvmsdisj 35628 nepss 36076 dfon2lem6 36144 btwnconn1lem13 36457 wl-exeq 38044 eqvreldisj 39204 lsator0sp 39632 lkreqN 39801 2at0mat0 40156 trlator0 40802 dochkrshp4 42020 dochsat0 42088 lcfl6 42131 expeqidd 42941 sn-remul0ord 43024 rp-fakeimass 44095 frege124d 44344 clsk1independent 44629 mnringmulrcld 44811 pm10.57 44940 icccncfext 46460 fourierdlem70 46749 ichnreuop 48077 uzlidlring 48856 nneop 49158 mo0sn 49446 euendfunc2 50157 |
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