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Mirrors > Home > ILE Home > Th. List > sefvex | Unicode version |
Description: If a function is set-like, then the function value exists if the input does. (Contributed by Mario Carneiro, 24-May-2019.) |
Ref | Expression |
---|---|
sefvex | Se |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 2604 | . . . . . . . 8 | |
2 | 1 | a1i 9 | . . . . . . 7 Se |
3 | simp3 940 | . . . . . . . 8 Se | |
4 | simp2 939 | . . . . . . . . 9 Se | |
5 | brcnvg 4534 | . . . . . . . . 9 | |
6 | 1, 4, 5 | sylancr 405 | . . . . . . . 8 Se |
7 | 3, 6 | mpbird 165 | . . . . . . 7 Se |
8 | breq1 3788 | . . . . . . . 8 | |
9 | 8 | elrab 2749 | . . . . . . 7 |
10 | 2, 7, 9 | sylanbrc 408 | . . . . . 6 Se |
11 | elssuni 3629 | . . . . . 6 | |
12 | 10, 11 | syl 14 | . . . . 5 Se |
13 | 12 | 3expia 1140 | . . . 4 Se |
14 | 13 | alrimiv 1795 | . . 3 Se |
15 | fvss 5209 | . . 3 | |
16 | 14, 15 | syl 14 | . 2 Se |
17 | seex 4090 | . . 3 Se | |
18 | uniexg 4193 | . . 3 | |
19 | 17, 18 | syl 14 | . 2 Se |
20 | ssexg 3917 | . 2 | |
21 | 16, 19, 20 | syl2anc 403 | 1 Se |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 w3a 919 wal 1282 wcel 1433 crab 2352 cvv 2601 wss 2973 cuni 3601 class class class wbr 3785 Se wse 4084 ccnv 4362 cfv 4922 |
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-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-un 4188 |
This theorem depends on definitions: df-bi 115 df-3an 921 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-ral 2353 df-rex 2354 df-rab 2357 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-se 4088 df-cnv 4371 df-iota 4887 df-fv 4930 |
This theorem is referenced by: (None) |
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