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A geometric representation of integral solutions of x2 + xy + y2 = m2


Lorenz Halbeisen
Norbert Hungerbuhler

Abstract

More than a century ago, Norman Anning conjectured that it is possible to arrange 48 points on a circle, such that all distances between the points are  integer numbers and are all among the solutions of the diophantine equation x2 + xy + y2 = 72 132 192 312: We shall obtain Anning's conjecture as a  consequence of a far more general geometrical result.


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eISSN: 1727-933X
print ISSN: 1607-3606