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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 4698 | . 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 2114 Vcvv 3496 {cpr 4571 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-v 3498 df-un 3943 df-sn 4570 df-pr 4572 |
This theorem is referenced by: prid2 4701 prnz 4714 preq12b 4783 unisn2 5218 opi1 5362 opeluu 5364 dmrnssfld 5843 funopg 6391 fprb 6958 fveqf1o 7060 2dom 8584 opthreg 9083 djuss 9351 dfac2b 9558 brdom7disj 9955 brdom6disj 9956 reelprrecn 10631 pnfxr 10697 m1expcl2 13454 hash2prb 13833 sadcf 15804 prmreclem2 16255 fnpr2ob 16833 setcepi 17350 grpss 18123 efgi0 18848 vrgpf 18896 vrgpinv 18897 frgpuptinv 18899 frgpup2 18904 frgpnabllem1 18995 dmdprdpr 19173 dprdpr 19174 cnmsgnsubg 20723 m2detleiblem5 21236 m2detleiblem3 21240 m2detleiblem4 21241 m2detleib 21242 indistopon 21611 indiscld 21701 xpstopnlem1 22419 xpstopnlem2 22421 xpsdsval 22993 ehl2eudis 24027 i1f1lem 24292 i1f1 24293 dvnfre 24551 c1lip2 24597 aannenlem2 24920 cxplogb 25366 ppiublem2 25781 lgsdir2lem3 25905 eengbas 26769 ebtwntg 26770 structvtxval 26808 usgr2trlncl 27543 umgrwwlks2on 27738 wlk2v2e 27938 eulerpathpr 28021 s2rn 30622 psgnid 30741 trsp2cyc 30767 cyc3fv1 30781 cnmsgn0g 30790 prsiga 31392 coinflippvt 31744 subfacp1lem3 32431 kur14lem7 32461 ex-sategoelel12 32676 noxp1o 33172 noextendlt 33178 nosepdmlem 33189 nolt02o 33201 nosupbnd1lem5 33214 nosupbnd2lem1 33217 noetalem1 33219 onint1 33799 poimirlem22 34916 pw2f1ocnv 39641 fvrcllb0d 40045 fvrcllb0da 40046 corclrcl 40059 relexp0idm 40067 corcltrcl 40091 mnuprdlem1 40615 mnuprdlem3 40617 mnurndlem1 40624 refsum2cnlem1 41301 limsup10exlem 42060 fourierdlem103 42501 fourierdlem104 42502 prsal 42610 zlmodzxzscm 44412 zlmodzxzldeplem3 44564 rrx2pxel 44705 rrx2linesl 44737 2sphere0 44744 |
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