Jordan decomposition in an affine algebraic group (source code)

= Jordan decomposition in an affine algebraic group
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{wiki=Jordan–Chevalley_decomposition}

Every element $g$ of an affine algebraic group has unique commuting semisimple and unipotent parts $g_s,g_u$ such that $g=g_sg_u$. The construction agrees with the multiplicative <Jordan normal form>[Jordan decomposition] in every rational representation.