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Mirrors > Home > ILE Home > Th. List > funssres | Unicode version |
Description: The restriction of a function to the domain of a subclass equals the subclass. (Contributed by NM, 15-Aug-1994.) |
Ref | Expression |
---|---|
funssres |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssel 3057 |
. . . . . . 7
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2 | vex 2660 |
. . . . . . . . 9
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3 | vex 2660 |
. . . . . . . . 9
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4 | 2, 3 | opeldm 4702 |
. . . . . . . 8
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5 | 4 | a1i 9 |
. . . . . . 7
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6 | 1, 5 | jcad 303 |
. . . . . 6
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7 | 6 | adantl 273 |
. . . . 5
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8 | funeu2 5107 |
. . . . . . . . . . . 12
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9 | 2 | eldm2 4697 |
. . . . . . . . . . . . . 14
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10 | 1 | ancrd 322 |
. . . . . . . . . . . . . . 15
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11 | 10 | eximdv 1834 |
. . . . . . . . . . . . . 14
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12 | 9, 11 | syl5bi 151 |
. . . . . . . . . . . . 13
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13 | 12 | imp 123 |
. . . . . . . . . . . 12
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14 | eupick 2054 |
. . . . . . . . . . . 12
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15 | 8, 13, 14 | syl2an 285 |
. . . . . . . . . . 11
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16 | 15 | exp43 367 |
. . . . . . . . . 10
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17 | 16 | com23 78 |
. . . . . . . . 9
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18 | 17 | imp 123 |
. . . . . . . 8
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19 | 18 | com34 83 |
. . . . . . 7
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20 | 19 | pm2.43d 50 |
. . . . . 6
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21 | 20 | impd 252 |
. . . . 5
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22 | 7, 21 | impbid 128 |
. . . 4
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23 | 3 | opelres 4782 |
. . . 4
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24 | 22, 23 | syl6rbbr 198 |
. . 3
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25 | 24 | alrimivv 1829 |
. 2
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26 | relres 4805 |
. . 3
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27 | funrel 5098 |
. . . 4
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28 | relss 4586 |
. . . 4
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29 | 27, 28 | mpan9 277 |
. . 3
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30 | eqrel 4588 |
. . 3
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31 | 26, 29, 30 | sylancr 408 |
. 2
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32 | 25, 31 | mpbird 166 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 681 ax-5 1406 ax-7 1407 ax-gen 1408 ax-ie1 1452 ax-ie2 1453 ax-8 1465 ax-10 1466 ax-11 1467 ax-i12 1468 ax-bndl 1469 ax-4 1470 ax-14 1475 ax-17 1489 ax-i9 1493 ax-ial 1497 ax-i5r 1498 ax-ext 2097 ax-sep 4006 ax-pow 4058 ax-pr 4091 |
This theorem depends on definitions: df-bi 116 df-3an 947 df-tru 1317 df-nf 1420 df-sb 1719 df-eu 1978 df-mo 1979 df-clab 2102 df-cleq 2108 df-clel 2111 df-nfc 2244 df-ral 2395 df-rex 2396 df-v 2659 df-un 3041 df-in 3043 df-ss 3050 df-pw 3478 df-sn 3499 df-pr 3500 df-op 3502 df-br 3896 df-opab 3950 df-id 4175 df-xp 4505 df-rel 4506 df-cnv 4507 df-co 4508 df-dm 4509 df-res 4511 df-fun 5083 |
This theorem is referenced by: fun2ssres 5124 funcnvres 5154 funssfv 5401 oprssov 5866 |
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