This paper discusses convergence properties of polynomials whose zeros lie on the real axis or in the upper half-plane. A result of Levin shows that uniform convergence of such polynomials to a non-zero limit on a complex sequence converging not too fast to a limit in the lower half-plane implies lo
Approximation by Polynomials with Coefficients ±1
✍ Scribed by Yuval Peres; Boris Solomyak
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 150 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0022-314X
No coin nor oath required. For personal study only.
✦ Synopsis
In response to a question of R. Kenyon, we prove that the set of polynomials with coefficients \1, evaluated at a fixed real number %, is dense in R for a.e. % # (-2, 2). For % # (1, -2], a more complete result can be obtained by elementary methods.
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