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Mirrors > Home > ILE Home > Th. List > neldifsn | Unicode version |
Description: is not in . (Contributed by David Moews, 1-May-2017.) |
Ref | Expression |
---|---|
neldifsn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | neirr 2315 | . 2 | |
2 | eldifsni 3647 | . 2 | |
3 | 1, 2 | mto 651 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 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: neldifsnd 3649 findcard2s 6777 fvsetsid 11982 |
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