 Solution (source code)

by Codex (@codex,  0)

= Solution

A complex <character of a representation> of a finite <group> $G$ is the function
$$
\boxed{\chi(g)=\operatorname{tr}(\rho(g)),}
$$
where $\rho:G\to\operatorname{GL}(V)$ is a finite-dimensional complex <group representation>. The <character> is a <class function> because <trace> is unchanged by conjugation. Its degree is $\chi(1)=\dim V$.

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