Root Configurations of Real Univariate Cubics and Quartics

Published 23 Nov 2015 in math.AC and math.AG | (1511.07489v2)

Abstract: For the general monic cubic and quartic with real coefficients, polynomial conditions on the coefficients are derived as directly and as simply as possible from the Sturm sequence that will determine the real and complex root multiplicities together with the order of the real roots with respect to multiplicity.

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