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Line 1: In ~~mathematics~~mathematical [[invariant theory]], an '''invariant of a binary form''' is a polynomial in the coefficients of a [[binary form]] in two variables ''x'' and ''y'' that remains invariant under unimodular transformations of the variables ''x'' and ''y''. The invariants of a binary form are a graded algebra, and {{harvtxt\|Gordan\|1868}} proved that this algebra is finitely generated if the base field is the complex numbers. ==The ring of invariants==

Invariant of a binary form: Difference between revisions