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Mirrors > Home > ILE Home > Th. List > elunirn | Unicode version |
Description: Membership in the union of the range of a function. (Contributed by NM, 24-Sep-2006.) |
Ref | Expression |
---|---|
elunirn |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluni 3824 |
. 2
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2 | funfn 5258 |
. . . . . . . 8
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3 | fvelrnb 5576 |
. . . . . . . 8
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4 | 2, 3 | sylbi 121 |
. . . . . . 7
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5 | 4 | anbi2d 464 |
. . . . . 6
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6 | r19.42v 2644 |
. . . . . 6
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7 | 5, 6 | bitr4di 198 |
. . . . 5
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8 | eleq2 2251 |
. . . . . . 7
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9 | 8 | biimparc 299 |
. . . . . 6
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10 | 9 | reximi 2584 |
. . . . 5
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11 | 7, 10 | biimtrdi 163 |
. . . 4
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12 | 11 | exlimdv 1829 |
. . 3
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13 | fvelrn 5660 |
. . . . 5
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14 | funfvex 5544 |
. . . . . 6
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15 | eleq2 2251 |
. . . . . . . 8
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16 | eleq1 2250 |
. . . . . . . 8
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17 | 15, 16 | anbi12d 473 |
. . . . . . 7
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18 | 17 | spcegv 2837 |
. . . . . 6
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19 | 14, 18 | syl 14 |
. . . . 5
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20 | 13, 19 | mpan2d 428 |
. . . 4
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21 | 20 | rexlimdva 2604 |
. . 3
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22 | 12, 21 | impbid 129 |
. 2
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23 | 1, 22 | bitrid 192 |
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-io 710 ax-5 1457 ax-7 1458 ax-gen 1459 ax-ie1 1503 ax-ie2 1504 ax-8 1514 ax-10 1515 ax-11 1516 ax-i12 1517 ax-bndl 1519 ax-4 1520 ax-17 1536 ax-i9 1540 ax-ial 1544 ax-i5r 1545 ax-14 2161 ax-ext 2169 ax-sep 4133 ax-pow 4186 ax-pr 4221 |
This theorem depends on definitions: df-bi 117 df-3an 981 df-tru 1366 df-nf 1471 df-sb 1773 df-eu 2039 df-mo 2040 df-clab 2174 df-cleq 2180 df-clel 2183 df-nfc 2318 df-ral 2470 df-rex 2471 df-v 2751 df-sbc 2975 df-un 3145 df-in 3147 df-ss 3154 df-pw 3589 df-sn 3610 df-pr 3611 df-op 3613 df-uni 3822 df-br 4016 df-opab 4077 df-mpt 4078 df-id 4305 df-xp 4644 df-rel 4645 df-cnv 4646 df-co 4647 df-dm 4648 df-rn 4649 df-iota 5190 df-fun 5230 df-fn 5231 df-fv 5236 |
This theorem is referenced by: fnunirn 5781 |
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