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Mirrors > Home > ILE Home > Th. List > symdifxor | Unicode version |
Description: Expressing symmetric difference with exclusive-or or two differences. (Contributed by Jim Kingdon, 28-Jul-2018.) |
Ref | Expression |
---|---|
symdifxor |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eldif 3009 |
. . . 4
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2 | eldif 3009 |
. . . 4
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3 | 1, 2 | orbi12i 717 |
. . 3
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4 | elun 3142 |
. . 3
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5 | excxor 1315 |
. . . 4
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6 | ancom 263 |
. . . . 5
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7 | 6 | orbi2i 715 |
. . . 4
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8 | 5, 7 | bitri 183 |
. . 3
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9 | 3, 4, 8 | 3bitr4i 211 |
. 2
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10 | 9 | abbi2i 2203 |
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 105 ax-ia2 106 ax-ia3 107 ax-in1 580 ax-in2 581 ax-io 666 ax-5 1382 ax-7 1383 ax-gen 1384 ax-ie1 1428 ax-ie2 1429 ax-8 1441 ax-10 1442 ax-11 1443 ax-i12 1444 ax-bndl 1445 ax-4 1446 ax-17 1465 ax-i9 1469 ax-ial 1473 ax-i5r 1474 ax-ext 2071 |
This theorem depends on definitions: df-bi 116 df-tru 1293 df-xor 1313 df-nf 1396 df-sb 1694 df-clab 2076 df-cleq 2082 df-clel 2085 df-nfc 2218 df-v 2622 df-dif 3002 df-un 3004 |
This theorem is referenced by: (None) |
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