Every year on 22 July, math lovers around the world take a moment to celebrate something special—Pi Approximation Day. This day is dedicated to the mathematical constant π (pi), one of the most ...

Pi Approximation Day celebrates the pi symbol (π) and its importance to mathematics. The symbol is a Greek letter, and it is used in mathematics to represent the ratio of the circumference of a circle ...

The Annals of Statistics, Vol. 46, No. 2 (April 2018), pp. 642-678 (37 pages) This paper studies the Gaussian and bootstrap approximations for the probabilities of a nondegenerate U-statistic ...