Many derivative-root circles conjecture for Newton basins
Many derivative-root circles conjecture for Newton basins
Let be a degree- univariate complex polynomial. Let its DR-circles be the circles centered at the roots of with radii , where
For each root of , consider its basin of fast convergence under Newton's method. Many derivative-root circles conjecture. There exist universal constants and such that at least DR-circles contain segments of length radians lying in the union of the basins of fast convergence of the roots of . This would strengthen the algorithmic usefulness of the DR-circles by asserting that a linear number of them contain constant-sized useful segments. The supplied material gives no resolution status.
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Sources & referencesView supporting material
Primary source
Stephen A. Vavasis, “A conjecture that the roots of a univariate polynomial lie in a union of annuli”, arXiv:math/0606194 (2006).
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