The best constant for a geometric inequality.
On one of H. Alzer's problems.
A geometric inequality involving a mobile point in the place of the triangle.
The generalized Heron mean and its dual form.
On a geometric inequality by J. Sándor.
A geometric inequality of the generalized Erdős-Mordell type.
Sharpening on Mircea's inequality.
The best constant for Carleman's inequality of finite type.
The best constants for a double inequality in a triangle.
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