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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 ?
 Euler's formula e^ix = cos x + i sin x: a geometric approach
 Closed subspaces of a reflexive space
 The CauchySchwarz inequality and the Lagrange identity
 Martingale Theory II: Conditional expectation
 Closed Graph Theorem implies Open Mapping Theorem
 A proof of the MichaelSimonSobolev inequality
 Sobolev and Isoperimetric Inequality
 Mean value properties for harmonic functions on Riemannian manifolds
 Taylor expansion of metric
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