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Mirrors > Home > ILE Home > Th. List > elabrex | Unicode version |
Description: Elementhood in an image set. (Contributed by Mario Carneiro, 14-Jan-2014.) |
Ref | Expression |
---|---|
elabrex.1 |
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Ref | Expression |
---|---|
elabrex |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tru 1336 |
. . . 4
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2 | csbeq1a 3016 |
. . . . . . 7
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3 | 2 | equcoms 1685 |
. . . . . 6
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4 | a1tru 1348 |
. . . . . 6
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5 | 3, 4 | 2thd 174 |
. . . . 5
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6 | 5 | rspcev 2793 |
. . . 4
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7 | 1, 6 | mpan2 422 |
. . 3
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8 | elabrex.1 |
. . . 4
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9 | eqeq1 2147 |
. . . . 5
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10 | 9 | rexbidv 2439 |
. . . 4
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11 | 8, 10 | elab 2832 |
. . 3
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12 | 7, 11 | sylibr 133 |
. 2
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13 | nfv 1509 |
. . . 4
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14 | nfcsb1v 3040 |
. . . . 5
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15 | 14 | nfeq2 2294 |
. . . 4
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16 | 2 | eqeq2d 2152 |
. . . 4
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17 | 13, 15, 16 | cbvrex 2654 |
. . 3
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18 | 17 | abbii 2256 |
. 2
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19 | 12, 18 | eleqtrrdi 2234 |
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-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-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-rex 2423 df-v 2691 df-sbc 2914 df-csb 3008 |
This theorem is referenced by: eusvobj2 5768 |
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