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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 |
|---|---|
| prssi |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | prssg 3825 |
. 2
| |
| 2 | 1 | ibi 176 |
1
|
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 |
| This theorem is referenced by: prssd 3827 tpssi 3837 prelpwi 4300 onun2 4582 onintexmid 4665 nnregexmid 4713 rex2dom 6979 en2eqpr 7080 m1expcl2 10795 m1expcl 10796 minmax 11757 xrminmax 11792 1idssfct 12653 subrngin 14193 subrgin 14224 lssincl 14365 unopn 14695 umgrbien 15926 bdop 16321 012of 16444 isomninnlem 16486 trilpolemisumle 16494 trilpolemeq1 16496 trilpolemlt1 16497 iswomninnlem 16505 iswomni0 16507 ismkvnnlem 16508 nconstwlpolemgt0 16520 |
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