Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Invariants of Binary Forms   Basic invariants of binary forms over $\mathbb C$ up to degree 6 (and lower
degrees) were constructed by Clebsch and Bolza in the 19-th century using
complicated symbolic calculations. Igusa extended this to algebraically closed
fields of any characteristic using difficult techniques of algebraic geometry.
In this paper a simple proof is supplied that works in characteristic $p > 5$
and uses some concepts of invariant theory developed by Hilbert (in
characteristic 0) and Mumford, Haboush et al. in positive characteristic.
Further the analogue for pairs of binary cubics is also treated.

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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ph
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The categories of this paper are: nlin
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ