Definition
Character
The character of a finite-dimensional representation $(V, \rho)$ (Definition~Group Representation) is the function $\chi_V : G \to k$ defined by $\chi_V(g) = \mathrm{tr}(\rho(g))$.
Characters are class functions: $\chi_V(hgh^{-1}) = \chi_V(g)$, which follows from the group structure (Definition~Group (Classical)).
Depends on
Dependency Graph
flowchart LR
classDef current fill:#6366f1,color:#fff,stroke:#4f46e5
nca6bd350["Representation"]
n71746aac["Group (Classical)"]
ne83c1383["Character"]:::current
n8aabc776["Proposition"]
necf76e5d["Inner Product"]
nca6bd350 --> ne83c1383
n71746aac --> ne83c1383
ne83c1383 --> n8aabc776
ne83c1383 --> n8aabc776
ne83c1383 --> necf76e5d
click nca6bd350 "../objects/ca6bd350.html" "_self"
click n71746aac "../objects/71746aac.html" "_self"
click n8aabc776 "../objects/8aabc776.html" "_self"
click necf76e5d "../objects/ecf76e5d.html" "_self"