We obtain estimates of complete rational exponentials sums with sparse polynomials and rational functions f (x)=a 1 x r1 + } } } +a t x rt depending on the number of non zero coefficients t rather than on the degree.
A Combinatorial Problem on Polynomials and Rational Functions
✍ Scribed by György Elekes; Lajos Rónyai
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 190 KB
- Volume
- 89
- Category
- Article
- ISSN
- 0097-3165
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✦ Synopsis
The structure of rational functions of two real variables which take few distinct values on large (finite) Cartesian products is described. As an application, a problem of G. Purdy is solved on finite subsets of the plane which determine few distinct distances.
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