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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 4712 | . 2 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐶) → ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐶) ↔ {𝐴, 𝐵} ⊆ 𝐶)) | |
2 | 1 | ibi 270 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐶) → {𝐴, 𝐵} ⊆ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∈ wcel 2111 ⊆ wss 3881 {cpr 4527 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 |
This theorem is referenced by: prssd 4715 tpssi 4729 fr2nr 5497 fprb 6933 ordunel 7522 1sdom 8705 dfac2b 9541 tskpr 10181 m1expcl2 13447 m1expcl 13448 wrdlen2i 14295 gcdcllem3 15840 lcmfpr 15961 mreincl 16862 acsfn2 16926 ipole 17760 pmtr3ncom 18595 subrgin 19551 lssincl 19730 lspvadd 19861 cnmsgnbas 20267 cnmsgngrp 20268 psgninv 20271 zrhpsgnmhm 20273 mdetunilem7 21223 unopn 21508 incld 21648 indiscld 21696 leordtval2 21817 ovolioo 24172 i1f1 24294 aannenlem2 24925 upgrbi 26886 umgrbi 26894 frgr3vlem2 28059 4cycl2v2nb 28074 sshjval3 29137 pr01ssre 30566 psgnid 30789 pmtrto1cl 30791 cnmsgn0g 30838 altgnsg 30841 mdetpmtr1 31176 mdetpmtr12 31178 esumsnf 31433 prsiga 31500 difelsiga 31502 measssd 31584 carsgsigalem 31683 carsgclctun 31689 pmeasmono 31692 eulerpartlemgs2 31748 eulerpartlemn 31749 probun 31787 signswch 31941 signsvfn 31962 signlem0 31967 breprexpnat 32015 kur14lem1 32566 ssoninhaus 33909 poimirlem15 35072 inidl 35468 pmapmeet 37069 diameetN 38352 dihmeetcN 38598 dihmeet 38639 dvh4dimlem 38739 dvhdimlem 38740 dvh4dimN 38743 dvh3dim3N 38745 lcfrlem23 38861 lcfrlem25 38863 lcfrlem35 38873 mapdindp2 39017 lspindp5 39066 brfvrcld 40392 corclrcl 40408 corcltrcl 40440 ibliooicc 42613 fourierdlem51 42799 fourierdlem64 42812 fourierdlem102 42850 fourierdlem114 42862 sge0sn 43018 ovnsubadd2lem 43284 sprvalpw 43997 prprvalpw 44032 perfectALTVlem2 44240 nnsum3primesgbe 44310 fprmappr 44747 zlmodzxzel 44757 zlmodzxzldeplem1 44909 2arymaptfo 45068 prelrrx2 45127 line2x 45168 line2y 45169 onsetreclem2 45235 |
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