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Mirrors > Home > ILE Home > Th. List > Mathboxes > strcollnft | Unicode version |
Description: Closed form of strcollnf 10780. Version of ax-strcoll 10777 with one DV condition removed, the other DV condition replaced by a non-freeness antecedent, and without initial universal quantifier. (Contributed by BJ, 21-Oct-2019.) |
Ref | Expression |
---|---|
strcollnft |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | strcoll2 10778 |
. 2
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2 | nfnf1 1476 |
. . . . 5
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3 | 2 | nfal 1508 |
. . . 4
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4 | 3 | nfal 1508 |
. . 3
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5 | nfa2 1511 |
. . . 4
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6 | nfvd 1462 |
. . . . 5
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7 | nfa1 1474 |
. . . . . . . 8
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8 | nfcvd 2220 |
. . . . . . . 8
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9 | sp 1441 |
. . . . . . . 8
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10 | 7, 8, 9 | nfrexdxy 2399 |
. . . . . . 7
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11 | 10 | sps 1470 |
. . . . . 6
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12 | 11 | alcoms 1405 |
. . . . 5
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13 | 6, 12 | nfbid 1520 |
. . . 4
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14 | 5, 13 | nfald 1683 |
. . 3
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15 | nfv 1461 |
. . . . . 6
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16 | 5, 15 | nfan 1497 |
. . . . 5
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17 | elequ2 1641 |
. . . . . . 7
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18 | 17 | adantl 271 |
. . . . . 6
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19 | 18 | bibi1d 231 |
. . . . 5
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20 | 16, 19 | albid 1546 |
. . . 4
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21 | 20 | ex 113 |
. . 3
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22 | 4, 14, 21 | cbvexd 1843 |
. 2
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23 | 1, 22 | syl5ib 152 |
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 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-strcoll 10777 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-rex 2354 |
This theorem is referenced by: strcollnf 10780 |
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