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Mirrors > Home > ILE Home > Th. List > eldifsn | Unicode version |
Description: Membership in a set with an element removed. (Contributed by NM, 10-Oct-2007.) |
Ref | Expression |
---|---|
eldifsn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eldif 3075 | . 2 | |
2 | elsng 3537 | . . . 4 | |
3 | 2 | necon3bbid 2346 | . . 3 |
4 | 3 | pm5.32i 449 | . 2 |
5 | 1, 4 | bitri 183 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wa 103 wb 104 wcel 1480 wne 2306 cdif 3063 csn 3522 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ne 2307 df-v 2683 df-dif 3068 df-sn 3528 |
This theorem is referenced by: eldifsni 3647 rexdifsn 3650 difsn 3652 fnniniseg2 5536 rexsupp 5537 mpodifsnif 5857 suppssfv 5971 suppssov1 5972 dif1o 6328 fidifsnen 6757 en2eleq 7044 en2other2 7045 elni 7109 divvalap 8427 elnnne0 8984 divfnzn 9406 modfzo0difsn 10161 modsumfzodifsn 10162 hashdifpr 10559 eff2 11375 tanvalap 11404 fzo0dvdseq 11544 oddprmgt2 11803 setsslnid 11999 |
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