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Line 146: ===Covariants of two quartics=== There are 8 basic invariants (3 of degree 2, 4 of degree 3, and 1 of degree 4) and 28 basic covariants. (Gordan gave 30 covariants, but Sylvester showed that two of these are reducible.) ==See also==

Invariant of a binary form: Difference between revisions