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| Mirrors > Home > MPE Home > Th. List > cnmpt12 | Structured version Visualization version Unicode version | ||
| Description: The composition of continuous functions is continuous. (Contributed by Mario Carneiro, 12-Jun-2014.) (Revised by Mario Carneiro, 22-Aug-2015.) |
| Ref | Expression |
|---|---|
| cnmptid.j |
|
| cnmpt11.a |
|
| cnmpt1t.b |
|
| cnmpt12.k |
|
| cnmpt12.l |
|
| cnmpt12.c |
|
| cnmpt12.d |
|
| Ref | Expression |
|---|---|
| cnmpt12 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnmptid.j |
. . . . . . 7
| |
| 2 | cnmpt12.k |
. . . . . . 7
| |
| 3 | cnmpt11.a |
. . . . . . 7
| |
| 4 | cnf2 21053 |
. . . . . . 7
| |
| 5 | 1, 2, 3, 4 | syl3anc 1326 |
. . . . . 6
|
| 6 | eqid 2622 |
. . . . . . 7
| |
| 7 | 6 | fmpt 6381 |
. . . . . 6
|
| 8 | 5, 7 | sylibr 224 |
. . . . 5
|
| 9 | 8 | r19.21bi 2932 |
. . . 4
|
| 10 | cnmpt12.l |
. . . . . . 7
| |
| 11 | cnmpt1t.b |
. . . . . . 7
| |
| 12 | cnf2 21053 |
. . . . . . 7
| |
| 13 | 1, 10, 11, 12 | syl3anc 1326 |
. . . . . 6
|
| 14 | eqid 2622 |
. . . . . . 7
| |
| 15 | 14 | fmpt 6381 |
. . . . . 6
|
| 16 | 13, 15 | sylibr 224 |
. . . . 5
|
| 17 | 16 | r19.21bi 2932 |
. . . 4
|
| 18 | 9, 17 | jca 554 |
. . . . 5
|
| 19 | txtopon 21394 |
. . . . . . . . . 10
| |
| 20 | 2, 10, 19 | syl2anc 693 |
. . . . . . . . 9
|
| 21 | cnmpt12.c |
. . . . . . . . . . 11
| |
| 22 | cntop2 21045 |
. . . . . . . . . . 11
| |
| 23 | 21, 22 | syl 17 |
. . . . . . . . . 10
|
| 24 | eqid 2622 |
. . . . . . . . . . 11
| |
| 25 | 24 | toptopon 20722 |
. . . . . . . . . 10
|
| 26 | 23, 25 | sylib 208 |
. . . . . . . . 9
|
| 27 | cnf2 21053 |
. . . . . . . . 9
| |
| 28 | 20, 26, 21, 27 | syl3anc 1326 |
. . . . . . . 8
|
| 29 | eqid 2622 |
. . . . . . . . 9
| |
| 30 | 29 | fmpt2 7237 |
. . . . . . . 8
|
| 31 | 28, 30 | sylibr 224 |
. . . . . . 7
|
| 32 | r2al 2939 |
. . . . . . 7
| |
| 33 | 31, 32 | sylib 208 |
. . . . . 6
|
| 34 | 33 | adantr 481 |
. . . . 5
|
| 35 | eleq1 2689 |
. . . . . . . 8
| |
| 36 | eleq1 2689 |
. . . . . . . 8
| |
| 37 | 35, 36 | bi2anan9 917 |
. . . . . . 7
|
| 38 | cnmpt12.d |
. . . . . . . 8
| |
| 39 | 38 | eleq1d 2686 |
. . . . . . 7
|
| 40 | 37, 39 | imbi12d 334 |
. . . . . 6
|
| 41 | 40 | spc2gv 3296 |
. . . . 5
|
| 42 | 18, 34, 18, 41 | syl3c 66 |
. . . 4
|
| 43 | 38, 29 | ovmpt2ga 6790 |
. . . 4
|
| 44 | 9, 17, 42, 43 | syl3anc 1326 |
. . 3
|
| 45 | 44 | mpteq2dva 4744 |
. 2
|
| 46 | 1, 3, 11, 21 | cnmpt12f 21469 |
. 2
|
| 47 | 45, 46 | eqeltrrd 2702 |
1
|
| Colors of variables: wff setvar class |
| Syntax hints: |
| 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-csb 3534 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-iun 4522 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-1st 7168 df-2nd 7169 df-map 7859 df-topgen 16104 df-top 20699 df-topon 20716 df-bases 20750 df-cn 21031 df-tx 21365 |
| This theorem is referenced by: cnmptkk 21486 cnmptk1p 21488 pcocn 22817 pcopt 22822 pcopt2 22823 pcoass 22824 resqrtcn 24490 sqrtcn 24491 rmulccn 29974 pl1cn 30001 cxpcncf1 30673 cxpcncf2 40113 |
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