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Mirrors > Home > ILE Home > Th. List > dfoprab3 | Unicode version |
Description: Operation class abstraction expressed without existential quantifiers. (Contributed by NM, 16-Dec-2008.) |
Ref | Expression |
---|---|
dfoprab3.1 |
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Ref | Expression |
---|---|
dfoprab3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfoprab3s 5758 |
. 2
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2 | vex 2554 |
. . . . . 6
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3 | 1stexg 5736 |
. . . . . 6
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4 | 2, 3 | ax-mp 7 |
. . . . 5
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5 | 2ndexg 5737 |
. . . . . 6
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6 | 2, 5 | ax-mp 7 |
. . . . 5
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7 | eqcom 2039 |
. . . . . . . . . 10
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8 | eqcom 2039 |
. . . . . . . . . 10
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9 | 7, 8 | anbi12i 433 |
. . . . . . . . 9
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10 | eqopi 5740 |
. . . . . . . . 9
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11 | 9, 10 | sylan2b 271 |
. . . . . . . 8
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12 | dfoprab3.1 |
. . . . . . . 8
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13 | 11, 12 | syl 14 |
. . . . . . 7
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14 | 13 | bicomd 129 |
. . . . . 6
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15 | 14 | ex 108 |
. . . . 5
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16 | 4, 6, 15 | sbc2iedv 2824 |
. . . 4
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17 | 16 | pm5.32i 427 |
. . 3
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18 | 17 | opabbii 3815 |
. 2
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19 | 1, 18 | eqtr2i 2058 |
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 99 ax-ia2 100 ax-ia3 101 ax-io 629 ax-5 1333 ax-7 1334 ax-gen 1335 ax-ie1 1379 ax-ie2 1380 ax-8 1392 ax-10 1393 ax-11 1394 ax-i12 1395 ax-bndl 1396 ax-4 1397 ax-13 1401 ax-14 1402 ax-17 1416 ax-i9 1420 ax-ial 1424 ax-i5r 1425 ax-ext 2019 ax-sep 3866 ax-pow 3918 ax-pr 3935 ax-un 4136 |
This theorem depends on definitions: df-bi 110 df-3an 886 df-tru 1245 df-nf 1347 df-sb 1643 df-eu 1900 df-mo 1901 df-clab 2024 df-cleq 2030 df-clel 2033 df-nfc 2164 df-ral 2305 df-rex 2306 df-v 2553 df-sbc 2759 df-un 2916 df-in 2918 df-ss 2925 df-pw 3353 df-sn 3373 df-pr 3374 df-op 3376 df-uni 3572 df-br 3756 df-opab 3810 df-mpt 3811 df-id 4021 df-xp 4294 df-rel 4295 df-cnv 4296 df-co 4297 df-dm 4298 df-rn 4299 df-iota 4810 df-fun 4847 df-fn 4848 df-f 4849 df-fo 4851 df-fv 4853 df-oprab 5459 df-1st 5709 df-2nd 5710 |
This theorem is referenced by: dfoprab4 5760 df1st2 5782 df2nd2 5783 |
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