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Mirrors > Home > ILE Home > Th. List > cnco | Unicode version |
Description: The composition of two continuous functions is a continuous function. (Contributed by FL, 8-Dec-2006.) (Revised by Mario Carneiro, 21-Aug-2015.) |
Ref | Expression |
---|---|
cnco |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cntop1 12370 | . . 3 | |
2 | cntop2 12371 | . . 3 | |
3 | 1, 2 | anim12i 336 | . 2 |
4 | eqid 2139 | . . . . 5 | |
5 | eqid 2139 | . . . . 5 | |
6 | 4, 5 | cnf 12373 | . . . 4 |
7 | eqid 2139 | . . . . 5 | |
8 | 7, 4 | cnf 12373 | . . . 4 |
9 | fco 5288 | . . . 4 | |
10 | 6, 8, 9 | syl2anr 288 | . . 3 |
11 | cnvco 4724 | . . . . . . 7 | |
12 | 11 | imaeq1i 4878 | . . . . . 6 |
13 | imaco 5044 | . . . . . 6 | |
14 | 12, 13 | eqtri 2160 | . . . . 5 |
15 | simpll 518 | . . . . . 6 | |
16 | cnima 12389 | . . . . . . 7 | |
17 | 16 | adantll 467 | . . . . . 6 |
18 | cnima 12389 | . . . . . 6 | |
19 | 15, 17, 18 | syl2anc 408 | . . . . 5 |
20 | 14, 19 | eqeltrid 2226 | . . . 4 |
21 | 20 | ralrimiva 2505 | . . 3 |
22 | 10, 21 | jca 304 | . 2 |
23 | 7, 5 | iscn2 12369 | . 2 |
24 | 3, 22, 23 | sylanbrc 413 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wcel 1480 wral 2416 cuni 3736 ccnv 4538 cima 4542 ccom 4543 wf 5119 (class class class)co 5774 ctop 12164 ccn 12354 |
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-13 1491 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 ax-un 4355 ax-setind 4452 |
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-ne 2309 df-ral 2421 df-rex 2422 df-rab 2425 df-v 2688 df-sbc 2910 df-csb 3004 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-iun 3815 df-br 3930 df-opab 3990 df-mpt 3991 df-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-res 4551 df-ima 4552 df-iota 5088 df-fun 5125 df-fn 5126 df-f 5127 df-fv 5131 df-ov 5777 df-oprab 5778 df-mpo 5779 df-1st 6038 df-2nd 6039 df-map 6544 df-top 12165 df-topon 12178 df-cn 12357 |
This theorem is referenced by: txcn 12444 cnmpt11 12452 cnmpt21 12460 hmeoco 12485 |
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