Mathematics – Algebraic Geometry
Scientific paper
2011-05-15
Mathematics
Algebraic Geometry
3 pages; Comments on: Polynomials in one variable and ranks of certain tangent maps, arXiv:1010.0282
Scientific paper
Zarhin showed that a matrix constructed from a polynomial with distinct roots
has co-rank one. Some striking properties of this matrix are used to give a
direct proof of his result. An account is given of calculations carried out to
try to understand the analogous matrix for a polynomial with multiple roots and
a conjecture about its rank is stated.
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