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| Mirrors > Home > ILE Home > Th. List > fsnunf | Unicode version | ||
| Description: Adjoining a point to a function gives a function. (Contributed by Stefan O'Rear, 28-Feb-2015.) |
| Ref | Expression |
|---|---|
| fsnunf |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp1 1000 |
. . 3
| |
| 2 | simp2l 1026 |
. . . . 5
| |
| 3 | simp3 1002 |
. . . . 5
| |
| 4 | f1osng 5586 |
. . . . 5
| |
| 5 | 2, 3, 4 | syl2anc 411 |
. . . 4
|
| 6 | f1of 5544 |
. . . 4
| |
| 7 | 5, 6 | syl 14 |
. . 3
|
| 8 | simp2r 1027 |
. . . 4
| |
| 9 | disjsn 3705 |
. . . 4
| |
| 10 | 8, 9 | sylibr 134 |
. . 3
|
| 11 | fun 5469 |
. . 3
| |
| 12 | 1, 7, 10, 11 | syl21anc 1249 |
. 2
|
| 13 | snssi 3788 |
. . . . 5
| |
| 14 | 13 | 3ad2ant3 1023 |
. . . 4
|
| 15 | ssequn2 3354 |
. . . 4
| |
| 16 | 14, 15 | sylib 122 |
. . 3
|
| 17 | feq3 5430 |
. . 3
| |
| 18 | 16, 17 | syl 14 |
. 2
|
| 19 | 12, 18 | mpbid 147 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-14 2181 ax-ext 2189 ax-sep 4178 ax-pow 4234 ax-pr 4269 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ral 2491 df-rex 2492 df-v 2778 df-dif 3176 df-un 3178 df-in 3180 df-ss 3187 df-nul 3469 df-pw 3628 df-sn 3649 df-pr 3650 df-op 3652 df-br 4060 df-opab 4122 df-id 4358 df-xp 4699 df-rel 4700 df-cnv 4701 df-co 4702 df-dm 4703 df-rn 4704 df-fun 5292 df-fn 5293 df-f 5294 df-f1 5295 df-fo 5296 df-f1o 5297 |
| This theorem is referenced by: tfrcllemsucfn 6462 ennnfonelemg 12889 |
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