On the Sharpness of Theorems Concerning Zero-Free Regions for Certain Sequences of Polynomials,
KENT STATE UNIV OHIO DEPT OF MATHEMATICS
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In this paper, the authors establish the sharpness of a theorem concerning zero-free parabolic regions for certain sequences of polynomials satisfying a three-term recurrence relation. Similarly, the authors establish the sharpness of a zero-free sectorial region for certain sequences of Pade approximants to e sup z.
- Numerical Mathematics