# Notation

This page will contain some basic notation.

- or π½
_{2}is the binary space; - or π½
_{2}^{π}is the binary vector space of dimension π; - or π½
_{2π}is the finite field with 2^{π}elements; - π
_{πΉ}is the Walsh transform of the function πΉ; - ππ(β) or π©β(β) indicates the nonlinearity of a function;
- π
_{π}πΉ is the derivative of the function πΉ in the direction of π; - πΊ
_{πΉ}is the graph of πΉ;