Bourbaki

Corollary

Tag 03DP, permanent. Cite it as [Bourbaki, Tag 03DP].

Théories spectrales, chapter V, § 4. Représentations des groupes compacts

Let ϱ1\varrho_1 and ϱ2\varrho_2 be finite-dimensional representations of G. The representations ϱ1\varrho_1 and ϱ2\varrho_2 are isomorphic if and only if their characters are equal.

This follows from the proposition and corollary 3 of V, p. 392.

Bourbaki sets the proof directly after the statement, and the corpus does not separate them, so what is above is the statement and its proof together.

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Cites

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Machine translation of the English, by gpt-5.4, against glossary version 34. Not checked by a person.