Two conjectures for convex sets

January 6th, 2008

R.J.Gardner, S.Kwapien and D.P.Laurie working on a conjecture of B.Grunbaum, reached two elegant conjectures including inequalities about ovals. Here is an interesting solution.

The olive tree

January 6th, 2008

Some propositions on simplices

June 9th, 2007

Theorems and inequalities on simplices

The perimeters of the cevian and pedal triangle

June 8th, 2007

A solution to the problem E2716* of the A.M.M.

The Orthoptic Curve of a convex figure

March 4th, 2007

The orthoptic curve K* of the convex curve K is circle. What about K?. Some Inequalities.

The Gate

March 4th, 2007

In Island (Aegean sea)

February 23rd, 2007

The problem (conjecture) of Larman-Zong

February 23rd, 2007

A solution for E3

Knossos

February 14th, 2007

Some Inequalities for a n-simplex

February 14th, 2007

Inequalities between the width, the sum of the sides and the circumradius of a n-simplex.