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Mirrors > Home > ILE Home > Th. List > eusv2nf | Unicode version |
Description: Two ways to express single-valuedness of a class expression . (Contributed by Mario Carneiro, 18-Nov-2016.) |
Ref | Expression |
---|---|
eusv2.1 |
Ref | Expression |
---|---|
eusv2nf |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfeu1 1952 | . . . 4 | |
2 | nfe1 1425 | . . . . . . 7 | |
3 | 2 | nfeu 1960 | . . . . . 6 |
4 | eusv2.1 | . . . . . . . . 9 | |
5 | 4 | isseti 2607 | . . . . . . . 8 |
6 | 19.8a 1522 | . . . . . . . . 9 | |
7 | 6 | ancri 317 | . . . . . . . 8 |
8 | 5, 7 | eximii 1533 | . . . . . . 7 |
9 | eupick 2020 | . . . . . . 7 | |
10 | 8, 9 | mpan2 415 | . . . . . 6 |
11 | 3, 10 | alrimi 1455 | . . . . 5 |
12 | nf3 1599 | . . . . 5 | |
13 | 11, 12 | sylibr 132 | . . . 4 |
14 | 1, 13 | alrimi 1455 | . . 3 |
15 | dfnfc2 3619 | . . . 4 | |
16 | 15, 4 | mpg 1380 | . . 3 |
17 | 14, 16 | sylibr 132 | . 2 |
18 | eusvnfb 4204 | . . . 4 | |
19 | 4, 18 | mpbiran2 882 | . . 3 |
20 | eusv2i 4205 | . . 3 | |
21 | 19, 20 | sylbir 133 | . 2 |
22 | 17, 21 | impbii 124 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 wal 1282 wceq 1284 wnf 1389 wex 1421 wcel 1433 weu 1941 wnfc 2206 cvv 2601 |
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-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-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-rex 2354 df-v 2603 df-sbc 2816 df-csb 2909 df-un 2977 df-sn 3404 df-pr 3405 df-uni 3602 |
This theorem is referenced by: eusv2 4207 |
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