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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 992 | . . 3 | |
2 | simp2l 1018 | . . . . 5 | |
3 | simp3 994 | . . . . 5 | |
4 | f1osng 5483 | . . . . 5 | |
5 | 2, 3, 4 | syl2anc 409 | . . . 4 |
6 | f1of 5442 | . . . 4 | |
7 | 5, 6 | syl 14 | . . 3 |
8 | simp2r 1019 | . . . 4 | |
9 | disjsn 3645 | . . . 4 | |
10 | 8, 9 | sylibr 133 | . . 3 |
11 | fun 5370 | . . 3 | |
12 | 1, 7, 10, 11 | syl21anc 1232 | . 2 |
13 | snssi 3724 | . . . . 5 | |
14 | 13 | 3ad2ant3 1015 | . . . 4 |
15 | ssequn2 3300 | . . . 4 | |
16 | 14, 15 | sylib 121 | . . 3 |
17 | feq3 5332 | . . 3 | |
18 | 16, 17 | syl 14 | . 2 |
19 | 12, 18 | mpbid 146 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wa 103 wb 104 w3a 973 wceq 1348 wcel 2141 cun 3119 cin 3120 wss 3121 c0 3414 csn 3583 cop 3586 wf 5194 wf1o 5197 |
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-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-br 3990 df-opab 4051 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 |
This theorem is referenced by: tfrcllemsucfn 6332 ennnfonelemg 12358 |
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