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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 14380 |
. . 3
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2 | cntop2 14381 |
. . 3
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3 | 1, 2 | anim12i 338 |
. 2
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4 | eqid 2193 |
. . . . 5
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5 | eqid 2193 |
. . . . 5
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6 | 4, 5 | cnf 14383 |
. . . 4
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7 | eqid 2193 |
. . . . 5
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8 | 7, 4 | cnf 14383 |
. . . 4
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9 | fco 5420 |
. . . 4
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10 | 6, 8, 9 | syl2anr 290 |
. . 3
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11 | cnvco 4848 |
. . . . . . 7
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12 | 11 | imaeq1i 5003 |
. . . . . 6
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13 | imaco 5172 |
. . . . . 6
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14 | 12, 13 | eqtri 2214 |
. . . . 5
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15 | simpll 527 |
. . . . . 6
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16 | cnima 14399 |
. . . . . . 7
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17 | 16 | adantll 476 |
. . . . . 6
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18 | cnima 14399 |
. . . . . 6
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19 | 15, 17, 18 | syl2anc 411 |
. . . . 5
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20 | 14, 19 | eqeltrid 2280 |
. . . 4
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21 | 20 | ralrimiva 2567 |
. . 3
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22 | 10, 21 | jca 306 |
. 2
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23 | 7, 5 | iscn2 14379 |
. 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 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-sep 4148 ax-pow 4204 ax-pr 4239 ax-un 4465 ax-setind 4570 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-ral 2477 df-rex 2478 df-rab 2481 df-v 2762 df-sbc 2987 df-csb 3082 df-dif 3156 df-un 3158 df-in 3160 df-ss 3167 df-pw 3604 df-sn 3625 df-pr 3626 df-op 3628 df-uni 3837 df-iun 3915 df-br 4031 df-opab 4092 df-mpt 4093 df-id 4325 df-xp 4666 df-rel 4667 df-cnv 4668 df-co 4669 df-dm 4670 df-rn 4671 df-res 4672 df-ima 4673 df-iota 5216 df-fun 5257 df-fn 5258 df-f 5259 df-fv 5263 df-ov 5922 df-oprab 5923 df-mpo 5924 df-1st 6195 df-2nd 6196 df-map 6706 df-top 14177 df-topon 14190 df-cn 14367 |
This theorem is referenced by: txcn 14454 cnmpt11 14462 cnmpt21 14470 hmeoco 14495 |
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