Geodesic
A Note on a Discriminant Inequality
Canadian mathematical bulletin, Tome 3 (1960) no. 1, pp. 7-9

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The following conjecture has been investigated recently by Mordell [1]. “Let z1 , ..., zn be any set of n complex numbers. Then 1 the equality sign being necessary in the case when the z's are at the vertices of a regular n-sided polygon with center at the origin.” 
Chalk, J. H. H. A Note on a Discriminant Inequality. Canadian mathematical bulletin, Tome 3 (1960) no. 1, pp. 7-9. doi: 10.4153/CMB-1960-002-x
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[1] 1. Mordell, L. J., On a discriminant inequality, Canadian J. of Math., (in course of publication). Google Scholar

[2] 2. Mulholland, H. P., Inequalities between the geometric mean difference and the polar moments of a plane distribution, J. London Math. Soc. 33 (1958), 260-270. Google Scholar

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