Polynomials in Many Variables: Real vs Complex Norms
β Scribed by R. Aron; B. Beauzamy; P. Enflo
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 444 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0021-9045
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β¦ Synopsis
We study, for polynomials in many variables, the relations between the complex and the real sup-norms, and we give estimates involving the leading coefficients. We consider the case when the polynomial has a given degree, or some concentration at a given degree. The present paper is a contribution to a general field of investigation: For polynomials in many variables, what are the estimates independent of the number of variables? 1993 Academic Press. Inc
π SIMILAR VOLUMES
We continue the research initiated in Beauzamy et al. (J. Number Theory 36 (1990), 219-245) and Beauzamy et al. (to appear) about products of many-variable polynomials. We investigate the pairs \((P, Q)\) which are maximal for products in Bombieri's norm (that is for which \([P Q]\) is a large as po
We study Nikolskii-type inequalities for the L norms of an algebraic polynop mial in one variable, defined either by a contour integral or by an area integral over a Jordan domain in β«.ήβ¬ Further, we generalize the one-dimensional results to the case of polynomials in several variables over product
## Abstract Let β Β· β denote the uniform norm in the unit disk of the complex plane β. The main result in this note is as follows: __For any complex polynomial P of degree at most n and any Ξ±__ β β __the inequality__ β__P__ β β©½ (__n__ + 1)(β__z P__ (__z__) + __Ξ±__ β β |__Ξ±__ |) __holds.__ For any