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Mirrors > Home > ILE Home > Th. List > sbal2 | Unicode version |
Description: Move quantifier in and out of substitution. (Contributed by NM, 2-Jan-2002.) |
Ref | Expression |
---|---|
sbal2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hbnae 1721 |
. . . 4
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2 | dveeq1 2019 |
. . . . . . 7
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3 | 2 | alimi 1455 |
. . . . . 6
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4 | 3 | hbnaes 1723 |
. . . . 5
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5 | 19.21ht 1581 |
. . . . 5
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6 | 4, 5 | syl 14 |
. . . 4
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7 | 1, 6 | albidh 1480 |
. . 3
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8 | alcom 1478 |
. . 3
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9 | 7, 8 | bitr3di 195 |
. 2
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10 | sb6 1886 |
. 2
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11 | sb6 1886 |
. . 3
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12 | 11 | albii 1470 |
. 2
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13 | 9, 10, 12 | 3bitr4g 223 |
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 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 |
This theorem depends on definitions: df-bi 117 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 |
This theorem is referenced by: (None) |
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