Wald's Equation: Probability Theory, Identity (Mathematics), Expected Value

Skorokhod's Embedding Theorem: Mathematics, Probability Theory, Theorem, Stopping Time, Expected Value

Bézout's Identity: Number Theory, Lemma (mathematics), Linear Equation

Identity Function: Mathematics, Equation

Bernoulli distribution: probability theory, Statistics, Jacob Bernoulli, distribution, Discrete Variance, Expected value