The invariants of the binary nonic

2010/02/03 by Andries E. Brouwer, Brouwer, Andries E., Mihaela Popoviciu +1
Mathematics · #13A15 #68W30 #Algebraic Geometry (math.AG) #Algebraic Geometry and Number Theory #Algebraic structures and combinatorial models #FOS: Mathematics #Homotopy and Cohomology in Algebraic Topology #Representation Theory (math.RT) #math.AG #math.RT #msc:13A15 #msc:68W30

paper · pdf · doi:10.48550/arxiv.1002.0761

arxiv created 2010/02/03 · openalex publication_date 2010/02/03 · arxiv updated 2010/02/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider the algebra of invariants of binary forms of degree 9 with complex coefficients, find the 92 basic invariants, give an explicit system of parameters and show the existence of four more systems of parameters with different sets of degrees.

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