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Mirrors > Home > ILE Home > Th. List > dff3im | Unicode version |
Description: Property of a mapping. (Contributed by Jim Kingdon, 4-Jan-2019.) |
Ref | Expression |
---|---|
dff3im |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fssxp 5058 | . 2 | |
2 | ffun 5048 | . . . . . . . 8 | |
3 | 2 | adantr 261 | . . . . . . 7 |
4 | fdm 5050 | . . . . . . . . 9 | |
5 | 4 | eleq2d 2107 | . . . . . . . 8 |
6 | 5 | biimpar 281 | . . . . . . 7 |
7 | funfvop 5279 | . . . . . . 7 | |
8 | 3, 6, 7 | syl2anc 391 | . . . . . 6 |
9 | df-br 3765 | . . . . . 6 | |
10 | 8, 9 | sylibr 137 | . . . . 5 |
11 | funfvex 5192 | . . . . . . 7 | |
12 | breq2 3768 | . . . . . . . 8 | |
13 | 12 | spcegv 2641 | . . . . . . 7 |
14 | 11, 13 | syl 14 | . . . . . 6 |
15 | 3, 6, 14 | syl2anc 391 | . . . . 5 |
16 | 10, 15 | mpd 13 | . . . 4 |
17 | funmo 4917 | . . . . . 6 | |
18 | 2, 17 | syl 14 | . . . . 5 |
19 | 18 | adantr 261 | . . . 4 |
20 | eu5 1947 | . . . 4 | |
21 | 16, 19, 20 | sylanbrc 394 | . . 3 |
22 | 21 | ralrimiva 2392 | . 2 |
23 | 1, 22 | jca 290 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 97 wex 1381 wcel 1393 weu 1900 wmo 1901 wral 2306 cvv 2557 wss 2917 cop 3378 class class class wbr 3764 cxp 4343 cdm 4345 wfun 4896 wf 4898 cfv 4902 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-eu 1903 df-mo 1904 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-v 2559 df-sbc 2765 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-uni 3581 df-br 3765 df-opab 3819 df-id 4030 df-xp 4351 df-rel 4352 df-cnv 4353 df-co 4354 df-dm 4355 df-rn 4356 df-iota 4867 df-fun 4904 df-fn 4905 df-f 4906 df-fv 4910 |
This theorem is referenced by: dff4im 5313 |
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