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too complicated to be written here. Click on the link to download a text file. |
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X(1), X(2), X(3), X(4), X(9), X(100), X(104), X(119), X(123), X(528) |
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K817 is a focal cubic related with K816. The singular focus F = X(14686) lies on the line X(1)X(9) and on these four circles {X2,X3,X104,X392}, {X2,X4,X119}, {X3,X4,X72,X100}, {X100,X104,X119} and also on the (green) circle with diameter X(1344), X(1345). (H) is the polar conic of X(100), a rectangular hyperbola with center G meeting K817 at X(100) twice and two pairs of other (not always real) points with midpoint G. |