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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 4754 | . 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 3938 {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-3an 1085 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-in 3945 df-ss 3954 df-sn 4570 df-pr 4572 |
This theorem is referenced by: prssd 4757 tpssi 4771 fr2nr 5535 fprb 6958 ordunel 7544 1sdom 8723 dfac2b 9558 tskpr 10194 m1expcl2 13454 m1expcl 13455 wrdlen2i 14306 gcdcllem3 15852 lcmfpr 15973 mreincl 16872 acsfn2 16936 ipole 17770 pmtr3ncom 18605 subrgin 19560 lssincl 19739 lspvadd 19870 cnmsgnbas 20724 cnmsgngrp 20725 psgninv 20728 zrhpsgnmhm 20730 mdetunilem7 21229 unopn 21513 incld 21653 indiscld 21701 leordtval2 21822 ovolioo 24171 i1f1 24293 aannenlem2 24920 upgrbi 26880 umgrbi 26888 frgr3vlem2 28055 4cycl2v2nb 28070 sshjval3 29133 pr01ssre 30542 psgnid 30741 pmtrto1cl 30743 cnmsgn0g 30790 altgnsg 30793 mdetpmtr1 31090 mdetpmtr12 31092 esumsnf 31325 prsiga 31392 difelsiga 31394 inelpisys 31415 measssd 31476 carsgsigalem 31575 carsgclctun 31581 pmeasmono 31584 eulerpartlemgs2 31640 eulerpartlemn 31641 probun 31679 signswch 31833 signsvfn 31854 signlem0 31859 breprexpnat 31907 kur14lem1 32455 ssoninhaus 33798 poimirlem15 34909 inidl 35310 pmapmeet 36911 diameetN 38194 dihmeetcN 38440 dihmeet 38481 dvh4dimlem 38581 dvhdimlem 38582 dvh4dimN 38585 dvh3dim3N 38587 lcfrlem23 38703 lcfrlem25 38705 lcfrlem35 38715 mapdindp2 38859 lspindp5 38908 brfvrcld 40043 corclrcl 40059 corcltrcl 40091 ibliooicc 42263 fourierdlem51 42449 fourierdlem64 42462 fourierdlem102 42500 fourierdlem114 42512 sge0sn 42668 ovnsubadd2lem 42934 sprvalpw 43649 prprvalpw 43684 perfectALTVlem2 43894 nnsum3primesgbe 43964 mapprop 44401 zlmodzxzel 44410 zlmodzxzldeplem1 44562 prelrrx2 44707 line2x 44748 line2y 44749 onsetreclem2 44815 |
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