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Mirrors > Home > ILE Home > Th. List > eu3h | Unicode version |
Description: An alternate way to express existential uniqueness. (Contributed by NM, 8-Jul-1994.) (New usage is discouraged.) |
Ref | Expression |
---|---|
eu3h.1 |
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Ref | Expression |
---|---|
eu3h |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | euex 2030 |
. . 3
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2 | eu3h.1 |
. . . 4
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3 | 2 | eumo0 2031 |
. . 3
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4 | 1, 3 | jca 304 |
. 2
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5 | 2 | nfi 1439 |
. . . . 5
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6 | 5 | mo23 2041 |
. . . 4
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7 | 6 | anim2i 340 |
. . 3
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8 | 5 | eu2 2044 |
. . 3
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9 | 7, 8 | sylibr 133 |
. 2
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10 | 4, 9 | impbii 125 |
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 |
This theorem depends on definitions: df-bi 116 df-nf 1438 df-sb 1737 df-eu 2003 |
This theorem is referenced by: eu3 2046 mo2r 2052 2eu4 2093 |
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