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Mirrors > Home > ILE Home > Th. List > zfregfr | Unicode version |
Description: The epsilon relation is well-founded on any class. (Contributed by NM, 26-Nov-1995.) |
Ref | Expression |
---|---|
zfregfr |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-frind 4087 |
. 2
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2 | bi2.04 246 |
. . . . . . 7
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3 | 2 | albii 1399 |
. . . . . 6
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4 | df-ral 2353 |
. . . . . 6
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5 | 3, 4 | bitr4i 185 |
. . . . 5
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6 | sbim 1868 |
. . . . . . . . . . 11
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7 | clelsb3 2183 |
. . . . . . . . . . . 12
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8 | clelsb3 2183 |
. . . . . . . . . . . 12
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9 | 7, 8 | imbi12i 237 |
. . . . . . . . . . 11
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10 | 6, 9 | bitri 182 |
. . . . . . . . . 10
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11 | 10 | ralbii 2372 |
. . . . . . . . 9
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12 | ralcom3 2521 |
. . . . . . . . 9
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13 | 11, 12 | bitri 182 |
. . . . . . . 8
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14 | epel 4047 |
. . . . . . . . . 10
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15 | 14 | imbi1i 236 |
. . . . . . . . 9
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16 | 15 | ralbii 2372 |
. . . . . . . 8
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17 | 13, 16 | bitr4i 185 |
. . . . . . 7
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18 | 17 | imbi1i 236 |
. . . . . 6
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19 | 18 | ralbii 2372 |
. . . . 5
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20 | 5, 19 | bitri 182 |
. . . 4
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21 | ax-setind 4280 |
. . . . 5
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22 | dfss2 2988 |
. . . . 5
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23 | 21, 22 | sylibr 132 |
. . . 4
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24 | 20, 23 | sylbir 133 |
. . 3
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25 | df-frfor 4086 |
. . 3
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26 | 24, 25 | mpbir 144 |
. 2
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27 | 1, 26 | mpgbir 1382 |
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 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-setind 4280 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-br 3786 df-opab 3840 df-eprel 4044 df-frfor 4086 df-frind 4087 |
This theorem is referenced by: ordfr 4317 wessep 4320 reg3exmidlemwe 4321 |
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