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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 981 | . . 3 | |
2 | simp2l 1007 | . . . . 5 | |
3 | simp3 983 | . . . . 5 | |
4 | f1osng 5408 | . . . . 5 | |
5 | 2, 3, 4 | syl2anc 408 | . . . 4 |
6 | f1of 5367 | . . . 4 | |
7 | 5, 6 | syl 14 | . . 3 |
8 | simp2r 1008 | . . . 4 | |
9 | disjsn 3585 | . . . 4 | |
10 | 8, 9 | sylibr 133 | . . 3 |
11 | fun 5295 | . . 3 | |
12 | 1, 7, 10, 11 | syl21anc 1215 | . 2 |
13 | snssi 3664 | . . . . 5 | |
14 | 13 | 3ad2ant3 1004 | . . . 4 |
15 | ssequn2 3249 | . . . 4 | |
16 | 14, 15 | sylib 121 | . . 3 |
17 | feq3 5257 | . . 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 962 wceq 1331 wcel 1480 cun 3069 cin 3070 wss 3071 c0 3363 csn 3527 cop 3530 wf 5119 wf1o 5122 |
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 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ral 2421 df-rex 2422 df-v 2688 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-nul 3364 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-br 3930 df-opab 3990 df-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-fun 5125 df-fn 5126 df-f 5127 df-f1 5128 df-fo 5129 df-f1o 5130 |
This theorem is referenced by: tfrcllemsucfn 6250 ennnfonelemg 11916 |
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