Let R be a commutative ring with 1, and let R = t + t 2 R͠t͡ be the group of normalized formal power series over R under substitution. In this paper we investigate the connection between the ideal structure of R and the normal subgroup structure of R . In particular, we show that, if K is a finite f
Transcendence of Binomial and Lucas' Formal Power Series
✍ Scribed by J.-P Allouche; D Gouyou-Beauchamps; G Skordev
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 120 KB
- Volume
- 210
- Category
- Article
- ISSN
- 0021-8693
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✦ Synopsis
is transcendental over ޑ X when t is an integer G 2. This is due to Stanley for t even, and independently to Flajolet and to Woodcock and Sharif for the general case. While Stanley and Flajolet used analytic methods and studied the asymptotics of the coefficients of this series, Woodcock and Sharif gave a purely algebraic proof. Their basic idea is to reduce this series modulo prime numbers p, and to use the p-Lucas property: if n s Ýn p i is the base p expansion of the integer n, then i 2 n i 2 n ' mod p.
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