A recent major result of Marek Rychlik is a solution of the Equichordal Point Problem. This famous problem in geometry was posed in 1916 by Fujiwara and in 1917 by Blaschke et.
P has the same length.
It has been conjectured for a long time that a curve with two equichordal points cannot exist. But let us suppose for a moment that such a curve does exist. We will call this curve an equichordal curve . The distance between the potential two equichordal points is called the excentricity of the equichordal curve and will be denoted by a . This function should have a simple pole at 0 and it is multi-valued.