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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 3850 |
. 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-v 2814 df-un 3214 df-in 3216 df-ss 3223 df-sn 3694 df-pr 3695 |
| This theorem is referenced by: prssd 3852 tpssi 3862 prelpwi 4329 onun2 4611 onintexmid 4694 nnregexmid 4742 rex2dom 7062 en2eqpr 7166 m1expcl2 10922 m1expcl 10923 minmax 11911 xrminmax 11946 1idssfct 12808 subrngin 14350 subrgin 14381 lssincl 14525 unopn 14862 umgrbien 16097 bdop 16637 012of 16759 isomninnlem 16806 trilpolemisumle 16814 trilpolemeq1 16816 trilpolemlt1 16817 iswomninnlem 16826 iswomni0 16828 ismkvnnlem 16829 nconstwlpolemgt0 16841 |
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