Abstract
When groups were discovered, during the XIXth century, there were no “abstract groups” (like “a set endowed with a law which is associative, etc.”). Groups were given as permutation groups, and most of the time as acting on roots of polynomials by preserving the algebraic relations between them.
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Broué, M. (2017). On Representations. In: On Characters of Finite Groups. Mathematical Lectures from Peking University. Springer, Singapore. https://doi.org/10.1007/978-981-10-6878-2_2
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DOI: https://doi.org/10.1007/978-981-10-6878-2_2
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