![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > prid2g | Structured version Visualization version GIF version |
Description: An unordered pair contains its second member. Part of Theorem 7.6 of [Quine] p. 49. (Contributed by Stefan Allan, 8-Nov-2008.) |
Ref | Expression |
---|---|
prid2g | ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ {𝐴, 𝐵}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prid1g 4239 | . 2 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ {𝐵, 𝐴}) | |
2 | prcom 4211 | . 2 ⊢ {𝐵, 𝐴} = {𝐴, 𝐵} | |
3 | 1, 2 | syl6eleq 2698 | 1 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ {𝐴, 𝐵}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 1977 {cpr 4127 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-v 3175 df-un 3545 df-sn 4126 df-pr 4128 |
This theorem is referenced by: unisn2 4722 fr2nr 5016 fpr2g 6380 f1prex 6439 pw2f1olem 7949 hashprdifel 13047 gcdcllem3 15061 mgm2nsgrplem1 17228 mgm2nsgrplem2 17229 mgm2nsgrplem3 17230 sgrp2nmndlem1 17233 sgrp2rid2 17236 pmtrprfv 17696 m2detleib 20256 indistopon 20615 pptbas 20622 coseq0negpitopi 24059 usgra2edg 25911 nb3graprlem1 25980 nb3graprlem2 25981 2trllemF 26079 vdgr1b 26431 prsiga 29521 ftc1anclem8 32662 fourierdlem54 39053 prsal 39214 sge0pr 39287 imarnf1pr 40326 uhgr2edg 40435 umgrvad2edg 40440 uspgr2v1e2w 40477 usgr2v1e2w 40478 nb3grprlem1 40608 nb3grprlem2 40609 1hegrlfgr 40722 1hegrvtxdg1 40723 |
Copyright terms: Public domain | W3C validator |