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Mirrors > Home > ILE Home > Th. List > rdg0 | Unicode version |
Description: The initial value of the recursive definition generator. (Contributed by NM, 23-Apr-1995.) (Revised by Mario Carneiro, 14-Nov-2014.) |
Ref | Expression |
---|---|
rdg.1 |
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Ref | Expression |
---|---|
rdg0 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0ex 4063 |
. . . . 5
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2 | dmeq 4747 |
. . . . . . . 8
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3 | fveq1 5428 |
. . . . . . . . 9
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4 | 3 | fveq2d 5433 |
. . . . . . . 8
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5 | 2, 4 | iuneq12d 3845 |
. . . . . . 7
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6 | 5 | uneq2d 3235 |
. . . . . 6
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7 | eqid 2140 |
. . . . . 6
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8 | rdg.1 |
. . . . . . 7
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9 | dm0 4761 |
. . . . . . . . . 10
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10 | iuneq1 3834 |
. . . . . . . . . 10
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11 | 9, 10 | ax-mp 5 |
. . . . . . . . 9
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12 | 0iun 3878 |
. . . . . . . . 9
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13 | 11, 12 | eqtri 2161 |
. . . . . . . 8
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14 | 13, 1 | eqeltri 2213 |
. . . . . . 7
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15 | 8, 14 | unex 4370 |
. . . . . 6
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16 | 6, 7, 15 | fvmpt 5506 |
. . . . 5
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17 | 1, 16 | ax-mp 5 |
. . . 4
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18 | 17, 15 | eqeltri 2213 |
. . 3
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19 | df-irdg 6275 |
. . . 4
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20 | 19 | tfr0 6228 |
. . 3
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21 | 18, 20 | ax-mp 5 |
. 2
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22 | 13 | uneq2i 3232 |
. . . 4
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23 | 17, 22 | eqtri 2161 |
. . 3
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24 | un0 3401 |
. . 3
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25 | 23, 24 | eqtri 2161 |
. 2
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26 | 21, 25 | eqtri 2161 |
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 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-13 1492 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-nul 4062 ax-pow 4106 ax-pr 4139 ax-un 4363 ax-setind 4460 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ral 2422 df-rex 2423 df-rab 2426 df-v 2691 df-sbc 2914 df-csb 3008 df-dif 3078 df-un 3080 df-in 3082 df-ss 3089 df-nul 3369 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-iun 3823 df-br 3938 df-opab 3998 df-mpt 3999 df-tr 4035 df-id 4223 df-iord 4296 df-on 4298 df-suc 4301 df-xp 4553 df-rel 4554 df-cnv 4555 df-co 4556 df-dm 4557 df-res 4559 df-iota 5096 df-fun 5133 df-fn 5134 df-fv 5139 df-recs 6210 df-irdg 6275 |
This theorem is referenced by: rdg0g 6293 om0 6362 |
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