If $G$ is a group and $\rho:G\to \GL_n(\C)$ is a representation of $G$, then the character of $\rho$ is the function $\mathrm{Tr}\circ \rho$ where $\mathrm{Tr}$ is the function which takes the trace of a square matrix.
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- Last edited by John Jones on 2019-05-09 14:34:42
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