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Mirrors > Home > ILE Home > Th. List > fiuni | Unicode version |
Description: The union of the finite intersections of a set is simply the union of the set itself. (Contributed by Jeff Hankins, 5-Sep-2009.) (Revised by Mario Carneiro, 24-Nov-2013.) |
Ref | Expression |
---|---|
fiuni |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssfii 7033 |
. . 3
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2 | 1 | unissd 3859 |
. 2
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3 | eluni 3838 |
. . . . 5
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4 | 3 | biimpi 120 |
. . . 4
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5 | 4 | adantl 277 |
. . 3
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6 | simprr 531 |
. . . . 5
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7 | elfi2 7031 |
. . . . . 6
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8 | 7 | ad2antrr 488 |
. . . . 5
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9 | 6, 8 | mpbid 147 |
. . . 4
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10 | simprr 531 |
. . . . . 6
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11 | eldifi 3281 |
. . . . . . . . . 10
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12 | 11 | elin1d 3348 |
. . . . . . . . 9
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13 | 12 | elpwid 3612 |
. . . . . . . 8
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14 | 13 | ad2antrl 490 |
. . . . . . 7
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15 | eldifsni 3747 |
. . . . . . . . 9
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16 | 11 | elin2d 3349 |
. . . . . . . . . 10
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17 | fin0 6941 |
. . . . . . . . . 10
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18 | 16, 17 | syl 14 |
. . . . . . . . 9
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19 | 15, 18 | mpbid 147 |
. . . . . . . 8
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20 | 19 | ad2antrl 490 |
. . . . . . 7
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21 | intssuni2m 3894 |
. . . . . . 7
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22 | 14, 20, 21 | syl2anc 411 |
. . . . . 6
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23 | 10, 22 | eqsstrd 3215 |
. . . . 5
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24 | simplrl 535 |
. . . . 5
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25 | 23, 24 | sseldd 3180 |
. . . 4
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26 | 9, 25 | rexlimddv 2616 |
. . 3
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27 | 5, 26 | exlimddv 1910 |
. 2
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28 | 2, 27 | eqelssd 3198 |
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 4147 ax-nul 4155 ax-pow 4203 ax-pr 4238 ax-un 4464 ax-iinf 4620 |
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-v 2762 df-sbc 2986 df-csb 3081 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-nul 3447 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-int 3871 df-br 4030 df-opab 4091 df-mpt 4092 df-id 4324 df-suc 4402 df-iom 4623 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-rn 4670 df-res 4671 df-ima 4672 df-iota 5215 df-fun 5256 df-fn 5257 df-f 5258 df-f1 5259 df-fo 5260 df-f1o 5261 df-fv 5262 df-1o 6469 df-er 6587 df-en 6795 df-fin 6797 df-fi 7028 |
This theorem is referenced by: fipwssg 7038 |
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