4 papers
math.GM2021
Other special cases of a square problem
Yasushi Ieno
There exists "a square problem": in a unit square is there a point with four rational distances to the vertices? This problem is still regarded as unproved. Yang showed proofs for…
math.GM2020
A newly-generalized problem from a problem for the Mathematical Olympiad and the methods to solve it
Yasushi Ieno
A newly-generalized problem from a problem initially thought for the Mathematical Olympiad and the methods to solve it.
math.GM2020
A general expression of the triplets of integer sided triangles with a angle, in parallel with the case of a angle
Yasushi Ieno
A research for a general expression of the triplets of integer sided triangles with a angle, in parallel with the case of a angle.
math.GM2019
Another method to solve the grasshopper problem (the International Mathematical Olympiad)
Yasushi Ieno
The 6th problem of the 50th International Mathematical Olympiad (IMO), held in Germany, 2009, is called 'the grasshopper problem'. To this problem Kos developed theory from unique…