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Mirrors > Home > MPE Home > Th. List > mreiincl | Structured version Visualization version Unicode version |
Description: A nonempty indexed intersection of closed sets is closed. (Contributed by Stefan O'Rear, 1-Feb-2015.) |
Ref | Expression |
---|---|
mreiincl |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfiin2g 4553 |
. . 3
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2 | 1 | 3ad2ant3 1084 |
. 2
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3 | simp1 1061 |
. . 3
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4 | uniiunlem 3691 |
. . . . 5
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5 | 4 | ibi 256 |
. . . 4
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6 | 5 | 3ad2ant3 1084 |
. . 3
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7 | n0 3931 |
. . . . . 6
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8 | nfra1 2941 |
. . . . . . . 8
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9 | nfre1 3005 |
. . . . . . . . . 10
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10 | 9 | nfab 2769 |
. . . . . . . . 9
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11 | nfcv 2764 |
. . . . . . . . 9
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12 | 10, 11 | nfne 2894 |
. . . . . . . 8
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13 | 8, 12 | nfim 1825 |
. . . . . . 7
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14 | rsp 2929 |
. . . . . . . . . 10
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15 | 14 | com12 32 |
. . . . . . . . 9
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16 | elisset 3215 |
. . . . . . . . . . 11
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17 | rspe 3003 |
. . . . . . . . . . . 12
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18 | 17 | ex 450 |
. . . . . . . . . . 11
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19 | 16, 18 | syl5 34 |
. . . . . . . . . 10
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20 | rexcom4 3225 |
. . . . . . . . . 10
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21 | 19, 20 | syl6ib 241 |
. . . . . . . . 9
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22 | 15, 21 | syld 47 |
. . . . . . . 8
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
23 | abn0 3954 |
. . . . . . . 8
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24 | 22, 23 | syl6ibr 242 |
. . . . . . 7
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25 | 13, 24 | exlimi 2086 |
. . . . . 6
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26 | 7, 25 | sylbi 207 |
. . . . 5
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27 | 26 | imp 445 |
. . . 4
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28 | 27 | 3adant1 1079 |
. . 3
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29 | mreintcl 16255 |
. . 3
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30 | 3, 6, 28, 29 | syl3anc 1326 |
. 2
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31 | 2, 30 | eqeltrd 2701 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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 |
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-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-int 4476 df-iin 4523 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-iota 5851 df-fun 5890 df-fv 5896 df-mre 16246 |
This theorem is referenced by: mreriincl 16258 mretopd 20896 |
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