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Mirrors > Home > MPE Home > Th. List > cnco | Structured version Visualization version 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 21044 | . . 3 | |
2 | cntop2 21045 | . . 3 | |
3 | 1, 2 | anim12i 590 | . 2 |
4 | eqid 2622 | . . . . 5 | |
5 | eqid 2622 | . . . . 5 | |
6 | 4, 5 | cnf 21050 | . . . 4 |
7 | eqid 2622 | . . . . 5 | |
8 | 7, 4 | cnf 21050 | . . . 4 |
9 | fco 6058 | . . . 4 | |
10 | 6, 8, 9 | syl2anr 495 | . . 3 |
11 | cnvco 5308 | . . . . . . 7 | |
12 | 11 | imaeq1i 5463 | . . . . . 6 |
13 | imaco 5640 | . . . . . 6 | |
14 | 12, 13 | eqtri 2644 | . . . . 5 |
15 | simpll 790 | . . . . . 6 | |
16 | cnima 21069 | . . . . . . 7 | |
17 | 16 | adantll 750 | . . . . . 6 |
18 | cnima 21069 | . . . . . 6 | |
19 | 15, 17, 18 | syl2anc 693 | . . . . 5 |
20 | 14, 19 | syl5eqel 2705 | . . . 4 |
21 | 20 | ralrimiva 2966 | . . 3 |
22 | 10, 21 | jca 554 | . 2 |
23 | 7, 5 | iscn2 21042 | . 2 |
24 | 3, 22, 23 | sylanbrc 698 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 wcel 1990 wral 2912 cuni 4436 ccnv 5113 cima 5117 ccom 5118 wf 5884 (class class class)co 6650 ctop 20698 ccn 21028 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-map 7859 df-top 20699 df-topon 20716 df-cn 21031 |
This theorem is referenced by: kgencn2 21360 txcn 21429 xkoco1cn 21460 xkoco2cn 21461 xkococnlem 21462 xkococn 21463 cnmpt11 21466 cnmpt21 21474 hmeoco 21575 qtophmeo 21620 htpyco1 22777 htpyco2 22778 phtpyco2 22789 reparphti 22797 reparpht 22798 phtpcco2 22799 copco 22818 pi1cof 22859 pi1coghm 22861 cnpconn 31212 txsconnlem 31222 txsconn 31223 cvmlift3lem2 31302 cvmlift3lem4 31304 cvmlift3lem5 31305 cvmlift3lem6 31306 hausgraph 37790 |
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