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Mirrors > Home > MPE Home > Th. List > elpri | Structured version Visualization version GIF version |
Description: If a class is an element of a pair, then it is one of the two paired elements. (Contributed by Scott Fenton, 1-Apr-2011.) |
Ref | Expression |
---|---|
elpri | ⊢ (𝐴 ∈ {𝐵, 𝐶} → (𝐴 = 𝐵 ∨ 𝐴 = 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elprg 4591 | . 2 ⊢ (𝐴 ∈ {𝐵, 𝐶} → (𝐴 ∈ {𝐵, 𝐶} ↔ (𝐴 = 𝐵 ∨ 𝐴 = 𝐶))) | |
2 | 1 | ibi 269 | 1 ⊢ (𝐴 ∈ {𝐵, 𝐶} → (𝐴 = 𝐵 ∨ 𝐴 = 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∨ wo 843 = wceq 1536 ∈ wcel 2113 {cpr 4572 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-v 3499 df-un 3944 df-sn 4571 df-pr 4573 |
This theorem is referenced by: nelpri 4597 nelprd 4599 tppreqb 4741 elpreqpr 4800 elpr2elpr 4802 prproe 4839 3elpr2eq 4840 opth1 5370 0nelop 5389 ftpg 6921 2oconcl 8131 cantnflem2 9156 eldju1st 9355 m1expcl2 13454 hash2pwpr 13837 bitsinv1lem 15793 prm23lt5 16154 fnpr2ob 16834 fvprif 16837 xpsfeq 16839 pmtrprfval 18618 m1expaddsub 18629 psgnprfval 18652 frgpuptinv 18900 frgpup3lem 18906 simpgnsgeqd 19226 2nsgsimpgd 19227 simpgnsgbid 19228 cnmsgnsubg 20724 zrhpsgnelbas 20741 mdetralt 21220 m2detleiblem1 21236 indiscld 21702 cnindis 21903 connclo 22026 txindis 22245 xpsxmetlem 22992 xpsmet 22995 ishl2 23976 recnprss 24505 recnperf 24506 dvlip2 24595 coseq0negpitopi 25092 pythag 25398 reasinsin 25477 scvxcvx 25566 perfectlem2 25809 lgslem4 25879 lgseisenlem2 25955 2lgsoddprmlem3 25993 usgredg4 27002 konigsberg 28039 ex-pr 28212 elpreq 30293 1neg1t1neg1 30476 tocyc01 30764 signswch 31835 kur14lem7 32463 poimirlem31 34927 ftc1anclem2 34972 wepwsolem 39648 relexp01min 40064 clsk1indlem1 40401 mnuprdlem1 40614 mnuprdlem2 40615 mnuprdlem3 40616 mnurndlem1 40623 ssrecnpr 40646 seff 40647 sblpnf 40648 expgrowthi 40671 dvconstbi 40672 sumpair 41298 refsum2cnlem1 41300 iooinlbub 41782 elprn1 41920 elprn2 41921 cncfiooicclem1 42182 dvmptconst 42205 dvmptidg 42207 dvmulcncf 42216 dvdivcncf 42218 elprneb 43271 perfectALTVlem2 43894 0dig2pr01 44677 prelrrx2b 44708 |
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