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Mirrors > Home > MPE Home > Th. List > cnmpt1t | Structured version Visualization version Unicode version |
Description: The composition of continuous functions is continuous. (Contributed by Mario Carneiro, 5-May-2014.) (Revised by Mario Carneiro, 22-Aug-2015.) |
Ref | Expression |
---|---|
cnmptid.j | TopOn |
cnmpt11.a | |
cnmpt1t.b |
Ref | Expression |
---|---|
cnmpt1t |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnmptid.j | . . . 4 TopOn | |
2 | toponuni 20719 | . . . 4 TopOn | |
3 | mpteq1 4737 | . . . 4 | |
4 | 1, 2, 3 | 3syl 18 | . . 3 |
5 | simpr 477 | . . . . . 6 | |
6 | cnmpt11.a | . . . . . . . . . . 11 | |
7 | cntop2 21045 | . . . . . . . . . . 11 | |
8 | 6, 7 | syl 17 | . . . . . . . . . 10 |
9 | eqid 2622 | . . . . . . . . . . 11 | |
10 | 9 | toptopon 20722 | . . . . . . . . . 10 TopOn |
11 | 8, 10 | sylib 208 | . . . . . . . . 9 TopOn |
12 | cnf2 21053 | . . . . . . . . 9 TopOn TopOn | |
13 | 1, 11, 6, 12 | syl3anc 1326 | . . . . . . . 8 |
14 | eqid 2622 | . . . . . . . . 9 | |
15 | 14 | fmpt 6381 | . . . . . . . 8 |
16 | 13, 15 | sylibr 224 | . . . . . . 7 |
17 | 16 | r19.21bi 2932 | . . . . . 6 |
18 | 14 | fvmpt2 6291 | . . . . . 6 |
19 | 5, 17, 18 | syl2anc 693 | . . . . 5 |
20 | cnmpt1t.b | . . . . . . . . . . 11 | |
21 | cntop2 21045 | . . . . . . . . . . 11 | |
22 | 20, 21 | syl 17 | . . . . . . . . . 10 |
23 | eqid 2622 | . . . . . . . . . . 11 | |
24 | 23 | toptopon 20722 | . . . . . . . . . 10 TopOn |
25 | 22, 24 | sylib 208 | . . . . . . . . 9 TopOn |
26 | cnf2 21053 | . . . . . . . . 9 TopOn TopOn | |
27 | 1, 25, 20, 26 | syl3anc 1326 | . . . . . . . 8 |
28 | eqid 2622 | . . . . . . . . 9 | |
29 | 28 | fmpt 6381 | . . . . . . . 8 |
30 | 27, 29 | sylibr 224 | . . . . . . 7 |
31 | 30 | r19.21bi 2932 | . . . . . 6 |
32 | 28 | fvmpt2 6291 | . . . . . 6 |
33 | 5, 31, 32 | syl2anc 693 | . . . . 5 |
34 | 19, 33 | opeq12d 4410 | . . . 4 |
35 | 34 | mpteq2dva 4744 | . . 3 |
36 | 4, 35 | eqtr3d 2658 | . 2 |
37 | eqid 2622 | . . . 4 | |
38 | nfcv 2764 | . . . . 5 | |
39 | nffvmpt1 6199 | . . . . . 6 | |
40 | nffvmpt1 6199 | . . . . . 6 | |
41 | 39, 40 | nfop 4418 | . . . . 5 |
42 | fveq2 6191 | . . . . . 6 | |
43 | fveq2 6191 | . . . . . 6 | |
44 | 42, 43 | opeq12d 4410 | . . . . 5 |
45 | 38, 41, 44 | cbvmpt 4749 | . . . 4 |
46 | 37, 45 | txcnmpt 21427 | . . 3 |
47 | 6, 20, 46 | syl2anc 693 | . 2 |
48 | 36, 47 | eqeltrrd 2702 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 wceq 1483 wcel 1990 wral 2912 cop 4183 cuni 4436 cmpt 4729 wf 5884 cfv 5888 (class class class)co 6650 ctop 20698 TopOnctopon 20715 ccn 21028 ctx 21363 |
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: cnmpt12f 21469 xkoinjcn 21490 txconn 21492 imasnopn 21493 imasncld 21494 imasncls 21495 ptunhmeo 21611 xkohmeo 21618 cnrehmeo 22752 |
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