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Mirrors > Home > ILE Home > Th. List > prssi | Unicode version |
Description: A pair of elements of a class is a subset of the class. (Contributed by NM, 16-Jan-2015.) |
Ref | Expression |
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prssi |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prssg 3776 |
. 2
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2 | 1 | ibi 176 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 |
This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-v 2762 df-un 3158 df-in 3160 df-ss 3167 df-sn 3625 df-pr 3626 |
This theorem is referenced by: prssd 3778 tpssi 3786 prelpwi 4244 onun2 4523 onintexmid 4606 nnregexmid 4654 en2eqpr 6965 m1expcl2 10635 m1expcl 10636 minmax 11376 xrminmax 11411 1idssfct 12256 subrngin 13712 subrgin 13743 lssincl 13884 unopn 14184 bdop 15437 012of 15556 isomninnlem 15590 trilpolemisumle 15598 trilpolemeq1 15600 trilpolemlt1 15601 iswomninnlem 15609 iswomni0 15611 ismkvnnlem 15612 nconstwlpolemgt0 15624 |
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