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Recent Posts
 Probability that a random inscribed triangle contains another circle
 Noncommutative probability II: independence
 Noncommutative probability I: motivations and examples
 A simple proof of the GaussBonnet theorem for geodesic ball
 Least squares in a nonordinary sense
 Archimedes’ principle for hyperbolic plane
 Archimedes and the area of sphere
 Zeros of random polynomials
 Hopf fibration double covers circle bundle of sphere
 Euler’s formula e^ix = cos x + i sin x: a geometric approach
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 Why is a² + b² ≥ 2ab ?
 Archimedes and the area of sphere
 Martingale Theory II: Conditional expectation
 Spherical cosine law
 Surjectivity of Gauss map and its degree
 142857*2=285714 142857*3=428571 ...
 Taylor expansion of metric
 The power mean inequality and some related topics
 Cosine law for tetrahedron
 The discrete GaussBonnet theorem
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