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 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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Top Posts
 Why is a² + b² ≥ 2ab ?
 Archimedes and the area of sphere
 Mean value properties for harmonic functions on Riemannian manifolds
 The power mean inequality and some related topics
 A condition for a Riemannian manifold to be a hyperbolic space
 a note of Professor Simon Donaldson talk The Ding functional, Berndtsson convexity and moment maps.
 A remark on the divergence theorem
 Euler's formula e^ix = cos x + i sin x: a geometric approach
 Sobolev and Isoperimetric Inequality
 Mathematics behind JPEG
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