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Mirrors > Home > ILE Home > Th. List > euan | Unicode version |
Description: Introduction of a conjunct into unique existential quantifier. (Contributed by NM, 19-Feb-2005.) (Proof shortened by Andrew Salmon, 9-Jul-2011.) |
Ref | Expression |
---|---|
euan.1 |
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Ref | Expression |
---|---|
euan |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | euan.1 |
. . . . . 6
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2 | simpl 108 |
. . . . . 6
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3 | 1, 2 | exlimih 1573 |
. . . . 5
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4 | 3 | adantr 274 |
. . . 4
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5 | simpr 109 |
. . . . . 6
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6 | 5 | eximi 1580 |
. . . . 5
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7 | 6 | adantr 274 |
. . . 4
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8 | hbe1 1472 |
. . . . . 6
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9 | 3 | a1d 22 |
. . . . . . . 8
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10 | 9 | ancrd 324 |
. . . . . . 7
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11 | 5, 10 | impbid2 142 |
. . . . . 6
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12 | 8, 11 | mobidh 2034 |
. . . . 5
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13 | 12 | biimpa 294 |
. . . 4
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14 | 4, 7, 13 | jca32 308 |
. . 3
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15 | eu5 2047 |
. . 3
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16 | eu5 2047 |
. . . 4
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17 | 16 | anbi2i 453 |
. . 3
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18 | 14, 15, 17 | 3imtr4i 200 |
. 2
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19 | ibar 299 |
. . . 4
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20 | 1, 19 | eubidh 2006 |
. . 3
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21 | 20 | biimpa 294 |
. 2
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22 | 18, 21 | 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 df-mo 2004 |
This theorem is referenced by: euanv 2057 2eu7 2094 |
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