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Line 76: ===Covariants of a binary nonic=== {{harvtxt\|Brouwer\|Popoviciu\|2010a}} showed that the algebra of invariants of a degree 9 form is generated by 92 invariants. Cröni, Hagedorn, and Brouwer<ref name="aeb">[http://www.win.tue.nl/~aeb/math/invar.html Brouwer, Invariants and covariants of quantics]</ref> computed 476 covariants, and Lercier & Olive showed that this list is complete. ===Covariants of a binary decimic=== Sylvester stated that the ring of invariants of binary decics is generated by 104 invariants the ring of covariants by 475 covariants; his list is to be correct for degrees up to 16 but wrong for higher degrees. {{harvtxt\|Brouwer\|Popoviciu\|2010b}} showed that the algebra of invariants of a degree 10 form is generated by 106 invariants. Hagedorn and Brouwer<ref~~>[http://www.win.tue.nl/~~~ name="aeb"/~~math/invar.html Brouwer, Invariants and covariants of quantics]</ref~~> computed 510 covariants, and Lercier & Olive showed that this list is complete. ===Covariants of a binary undecimic===

Invariant of a binary form: Difference between revisions