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Mirrors > Home > ILE Home > Th. List > euexex | Unicode version |
Description: Existential uniqueness and "at most one" double quantification. (Contributed by Jim Kingdon, 28-Dec-2018.) |
Ref | Expression |
---|---|
euexex.1 |
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Ref | Expression |
---|---|
euexex |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eu5 2047 |
. . 3
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2 | nfmo1 2012 |
. . . . . 6
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3 | nfa1 1522 |
. . . . . . 7
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4 | nfe1 1473 |
. . . . . . . 8
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5 | 4 | nfmo 2020 |
. . . . . . 7
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6 | 3, 5 | nfim 1552 |
. . . . . 6
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7 | 2, 6 | nfim 1552 |
. . . . 5
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8 | euexex.1 |
. . . . . . 7
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9 | 8 | nfmo 2020 |
. . . . . . 7
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10 | mopick 2078 |
. . . . . . . . 9
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11 | 10 | ex 114 |
. . . . . . . 8
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12 | 11 | com3r 79 |
. . . . . . 7
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13 | 8, 9, 12 | alrimd 1590 |
. . . . . 6
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14 | moim 2064 |
. . . . . . 7
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15 | 14 | spsd 1519 |
. . . . . 6
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16 | 13, 15 | syl6 33 |
. . . . 5
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17 | 7, 16 | exlimi 1574 |
. . . 4
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18 | 17 | imp 123 |
. . 3
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19 | 1, 18 | sylbi 120 |
. 2
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20 | 19 | imp 123 |
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-tru 1335 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 |
This theorem is referenced by: mosubt 2865 funco 5171 |
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