Symbols:Brackets/Angle Brackets

Symbol
Angle brackets are symbols used in a number of specific contexts.

They comprise the left angle bracket $\langle$ and the right angle bracket $\rangle$.

Usage
Angle brackets are used in the following contexts:


 * The specification of a point in polar coordinates: $\polar {r, \theta}$


 * To denote a sequence: $\sequence {s_n}$


 * To denote the set of images under an indexed family: $\family {x_i}_{i \mathop \in I}$


 * To denote a generator of a group or other algebraic structure: $\gen {a, b}$