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Mirrors > Home > ILE Home > Th. List > funssxp | Unicode version |
Description: Two ways of specifying a partial function from to . (Contributed by NM, 13-Nov-2007.) |
Ref | Expression |
---|---|
funssxp |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funfn 5123 | . . . . . 6 | |
2 | 1 | biimpi 119 | . . . . 5 |
3 | rnss 4739 | . . . . . 6 | |
4 | rnxpss 4940 | . . . . . 6 | |
5 | 3, 4 | sstrdi 3079 | . . . . 5 |
6 | 2, 5 | anim12i 336 | . . . 4 |
7 | df-f 5097 | . . . 4 | |
8 | 6, 7 | sylibr 133 | . . 3 |
9 | dmss 4708 | . . . . 5 | |
10 | dmxpss 4939 | . . . . 5 | |
11 | 9, 10 | sstrdi 3079 | . . . 4 |
12 | 11 | adantl 275 | . . 3 |
13 | 8, 12 | jca 304 | . 2 |
14 | ffun 5245 | . . . 4 | |
15 | 14 | adantr 274 | . . 3 |
16 | fssxp 5260 | . . . 4 | |
17 | xpss1 4619 | . . . 4 | |
18 | 16, 17 | sylan9ss 3080 | . . 3 |
19 | 15, 18 | jca 304 | . 2 |
20 | 13, 19 | impbii 125 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wb 104 wss 3041 cxp 4507 cdm 4509 crn 4510 wfun 5087 wfn 5088 wf 5089 |
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-io 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-14 1477 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 ax-sep 4016 ax-pow 4068 ax-pr 4101 |
This theorem depends on definitions: df-bi 116 df-3an 949 df-tru 1319 df-nf 1422 df-sb 1721 df-eu 1980 df-mo 1981 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-ral 2398 df-rex 2399 df-v 2662 df-un 3045 df-in 3047 df-ss 3054 df-pw 3482 df-sn 3503 df-pr 3504 df-op 3506 df-br 3900 df-opab 3960 df-xp 4515 df-rel 4516 df-cnv 4517 df-dm 4519 df-rn 4520 df-fun 5095 df-fn 5096 df-f 5097 |
This theorem is referenced by: elpm2g 6527 casef 6941 |
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