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Mirrors > Home > MPE Home > Th. List > prid1 | Structured version Visualization version GIF version |
Description: An unordered pair contains its first member. Part of Theorem 7.6 of [Quine] p. 49. (Contributed by NM, 24-Jun-1993.) |
Ref | Expression |
---|---|
prid1.1 | ⊢ 𝐴 ∈ V |
Ref | Expression |
---|---|
prid1 | ⊢ 𝐴 ∈ {𝐴, 𝐵} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prid1.1 | . 2 ⊢ 𝐴 ∈ V | |
2 | prid1g 4689 | . 2 ⊢ (𝐴 ∈ V → 𝐴 ∈ {𝐴, 𝐵}) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ 𝐴 ∈ {𝐴, 𝐵} |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2113 Vcvv 3491 {cpr 4562 |
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 2792 |
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 2799 df-cleq 2813 df-clel 2892 df-nfc 2962 df-v 3493 df-un 3934 df-sn 4561 df-pr 4563 |
This theorem is referenced by: prid2 4692 prnz 4705 preq12b 4774 unisn2 5209 opi1 5353 opeluu 5355 dmrnssfld 5834 funopg 6382 fprb 6949 fveqf1o 7051 2dom 8575 opthreg 9074 djuss 9342 dfac2b 9549 brdom7disj 9946 brdom6disj 9947 reelprrecn 10622 pnfxr 10688 m1expcl2 13448 hash2prb 13827 sadcf 15795 prmreclem2 16246 fnpr2ob 16824 setcepi 17341 grpss 18114 efgi0 18839 vrgpf 18887 vrgpinv 18888 frgpuptinv 18890 frgpup2 18895 frgpnabllem1 18986 dmdprdpr 19164 dprdpr 19165 cnmsgnsubg 20714 m2detleiblem5 21227 m2detleiblem3 21231 m2detleiblem4 21232 m2detleib 21233 indistopon 21602 indiscld 21692 xpstopnlem1 22410 xpstopnlem2 22412 xpsdsval 22984 ehl2eudis 24018 i1f1lem 24283 i1f1 24284 dvnfre 24544 c1lip2 24590 aannenlem2 24914 cxplogb 25360 ppiublem2 25775 lgsdir2lem3 25899 eengbas 26763 ebtwntg 26764 structvtxval 26802 usgr2trlncl 27537 umgrwwlks2on 27732 wlk2v2e 27932 eulerpathpr 28015 s2rn 30618 psgnid 30758 trsp2cyc 30784 cyc3fv1 30798 cnmsgn0g 30807 prsiga 31409 coinflippvt 31761 subfacp1lem3 32448 kur14lem7 32478 ex-sategoelel12 32693 noxp1o 33189 noextendlt 33195 nosepdmlem 33206 nolt02o 33218 nosupbnd1lem5 33231 nosupbnd2lem1 33234 noetalem1 33236 onint1 33816 poimirlem22 34956 pw2f1ocnv 39717 fvrcllb0d 40119 fvrcllb0da 40120 corclrcl 40133 relexp0idm 40141 corcltrcl 40165 mnuprdlem1 40689 mnuprdlem3 40691 mnurndlem1 40698 refsum2cnlem1 41375 limsup10exlem 42134 fourierdlem103 42575 fourierdlem104 42576 prsal 42684 zlmodzxzscm 44481 zlmodzxzldeplem3 44633 rrx2pxel 44774 rrx2linesl 44806 2sphere0 44813 |
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