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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 2982 | . 2 | |
2 | elsng 3413 | . . . 4 | |
3 | 2 | necon3bbid 2285 | . . 3 |
4 | 3 | pm5.32i 441 | . 2 |
5 | 1, 4 | bitri 182 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wa 102 wb 103 wcel 1433 wne 2245 cdif 2970 csn 3398 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-v 2603 df-dif 2975 df-sn 3404 |
This theorem is referenced by: eldifsni 3518 rexdifsn 3521 difsn 3523 fnniniseg2 5311 rexsupp 5312 suppssfv 5728 suppssov1 5729 dif1o 6044 fidifsnen 6355 elni 6498 divvalap 7762 elnnne0 8302 divfnzn 8706 modfzo0difsn 9397 modsumfzodifsn 9398 fzo0dvdseq 10257 oddprmgt2 10515 |
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