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Mirrors > Home > MPE Home > Th. List > prssi | Structured version Visualization version GIF version |
Description: A pair of elements of a class is a subset of the class. (Contributed by NM, 16-Jan-2015.) |
Ref | Expression |
---|---|
prssi | ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐶) → {𝐴, 𝐵} ⊆ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prssg 4752 | . 2 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐶) → ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐶) ↔ {𝐴, 𝐵} ⊆ 𝐶)) | |
2 | 1 | ibi 269 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐶) → {𝐴, 𝐵} ⊆ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 ∈ wcel 2114 ⊆ wss 3936 {cpr 4569 |
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 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-v 3496 df-un 3941 df-in 3943 df-ss 3952 df-sn 4568 df-pr 4570 |
This theorem is referenced by: prssd 4755 tpssi 4769 fr2nr 5533 fprb 6956 ordunel 7542 1sdom 8721 dfac2b 9556 tskpr 10192 m1expcl2 13452 m1expcl 13453 wrdlen2i 14304 gcdcllem3 15850 lcmfpr 15971 mreincl 16870 acsfn2 16934 ipole 17768 pmtr3ncom 18603 subrgin 19558 lssincl 19737 lspvadd 19868 cnmsgnbas 20722 cnmsgngrp 20723 psgninv 20726 zrhpsgnmhm 20728 mdetunilem7 21227 unopn 21511 incld 21651 indiscld 21699 leordtval2 21820 ovolioo 24169 i1f1 24291 aannenlem2 24918 upgrbi 26878 umgrbi 26886 frgr3vlem2 28053 4cycl2v2nb 28068 sshjval3 29131 pr01ssre 30540 psgnid 30739 pmtrto1cl 30741 cnmsgn0g 30788 altgnsg 30791 mdetpmtr1 31088 mdetpmtr12 31090 esumsnf 31323 prsiga 31390 difelsiga 31392 inelpisys 31413 measssd 31474 carsgsigalem 31573 carsgclctun 31579 pmeasmono 31582 eulerpartlemgs2 31638 eulerpartlemn 31639 probun 31677 signswch 31831 signsvfn 31852 signlem0 31857 breprexpnat 31905 kur14lem1 32453 ssoninhaus 33796 poimirlem15 34922 inidl 35323 pmapmeet 36924 diameetN 38207 dihmeetcN 38453 dihmeet 38494 dvh4dimlem 38594 dvhdimlem 38595 dvh4dimN 38598 dvh3dim3N 38600 lcfrlem23 38716 lcfrlem25 38718 lcfrlem35 38728 mapdindp2 38872 lspindp5 38921 brfvrcld 40085 corclrcl 40101 corcltrcl 40133 ibliooicc 42305 fourierdlem51 42491 fourierdlem64 42504 fourierdlem102 42542 fourierdlem114 42554 sge0sn 42710 ovnsubadd2lem 42976 sprvalpw 43691 prprvalpw 43726 perfectALTVlem2 43936 nnsum3primesgbe 44006 mapprop 44443 zlmodzxzel 44452 zlmodzxzldeplem1 44604 prelrrx2 44749 line2x 44790 line2y 44791 onsetreclem2 44857 |
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