1. MathematicsExponential may refer to any of several mathematical topics related to exponentiation, including: Exponential function, also: Matrix exponential, the matrix analogue to the above Exponential decay, decrease at a rate proportional to value Exponential discounting, a specific form of the discount function, used in the analysis of choice over time Exponential growth, where the growth rate of a mathematical function is proportional to the function's current value Exponential map (Riemannian geometry), in Riemannian geometry Exponential map (Lie theory), in Lie theory Exponential notation, also known as scientific notation, or standard form Exponential object, in category theory Exponential time, in complexity theory in probability and statistics: Exponential distribution, a family of continuous probability distributions Exponentially modified Gaussian distribution, describes the sum of independent normal and exponential random variables Exponential family, a parametric set of probability distributions... from wikipedia.org