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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cntop1 13786 |
. . 3
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2 | cntop2 13787 |
. . 3
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3 | 1, 2 | anim12i 338 |
. 2
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4 | eqid 2177 |
. . . . 5
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5 | eqid 2177 |
. . . . 5
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6 | 4, 5 | cnf 13789 |
. . . 4
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7 | eqid 2177 |
. . . . 5
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8 | 7, 4 | cnf 13789 |
. . . 4
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9 | fco 5383 |
. . . 4
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10 | 6, 8, 9 | syl2anr 290 |
. . 3
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11 | cnvco 4814 |
. . . . . . 7
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12 | 11 | imaeq1i 4969 |
. . . . . 6
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13 | imaco 5136 |
. . . . . 6
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14 | 12, 13 | eqtri 2198 |
. . . . 5
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15 | simpll 527 |
. . . . . 6
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16 | cnima 13805 |
. . . . . . 7
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17 | 16 | adantll 476 |
. . . . . 6
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18 | cnima 13805 |
. . . . . 6
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19 | 15, 17, 18 | syl2anc 411 |
. . . . 5
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20 | 14, 19 | eqeltrid 2264 |
. . . 4
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21 | 20 | ralrimiva 2550 |
. . 3
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22 | 10, 21 | jca 306 |
. 2
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23 | 7, 5 | iscn2 13785 |
. 2
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24 | 3, 22, 23 | sylanbrc 417 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-sep 4123 ax-pow 4176 ax-pr 4211 ax-un 4435 ax-setind 4538 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-ral 2460 df-rex 2461 df-rab 2464 df-v 2741 df-sbc 2965 df-csb 3060 df-dif 3133 df-un 3135 df-in 3137 df-ss 3144 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-iun 3890 df-br 4006 df-opab 4067 df-mpt 4068 df-id 4295 df-xp 4634 df-rel 4635 df-cnv 4636 df-co 4637 df-dm 4638 df-rn 4639 df-res 4640 df-ima 4641 df-iota 5180 df-fun 5220 df-fn 5221 df-f 5222 df-fv 5226 df-ov 5880 df-oprab 5881 df-mpo 5882 df-1st 6143 df-2nd 6144 df-map 6652 df-top 13583 df-topon 13596 df-cn 13773 |
This theorem is referenced by: txcn 13860 cnmpt11 13868 cnmpt21 13876 hmeoco 13901 |
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