By the sea
February 12th, 2007On Minkowski Geometry
February 12th, 2007In this note we extend some well known properties of the Euclidean space En to the Minkowski space Mn.
The desertion
February 10th, 2007
The incircle of a tetrahedron
February 10th, 2007The incircle of a tetrahedron is a circle of maximum radius inscribed in the tetrahedron for every direction in En.
Paris
February 10th, 2007
The Pantheon Rome
February 10th, 2007
Sterlitsies
February 10th, 2007
The old boat
February 10th, 2007
Inequalities
January 15th, 2007Some Geometric and Analytic Inequalities.
An inequality in the Cartesian plane.
January 9th, 2007Let A(1,0), B(-1,0), C(0,1), D(0,-1) be points in the Cartesian plane and P so that OP is no less than 1. Then, it holds:
|AP-BP|+|CP-DP| is no less than 2.
