## Abstract

In previous papers the authors established a method how to decide on the algebraic independence of a set {y1, . . . , yn} when these numbers are connected with a set {x_{1}, . . . , x_{n}} of algebraic independent parameters by a system fi(x_{1}, . . . , x_{n}, y1, . . . , yn) = 0 (i = 1, 2, . . . , n) of rational functions. Constructing algebraic independent parameters by Nesterenko's theorem, the authors successfully applied their method to reciprocal sums of Fibonacci numbers and determined all the algebraic relations between three q-series belonging to one of the sixteen families of q-series introduced by Ramanujan. In this paper we first give a short proof of Nesterenko's theorem on the algebraic independence of π, e^{π√d} and a product of Gamma-values Γ(m/n) at rational points m/n. Then we apply the method mentioned above to various sets of numbers. Our algebraic independence results include among others the coefficients of the series expansion of the Heuman-Lambda function, the values P(q^{r}),Q(q^{r}), and R(q^{r}) of the Ramanujan functions P,Q, and R, for q ∈ Q with 0 < |q| < 1 and r = 1, 2, 3, 5, 7, 10, and the values given by reciprocal sums of polynomials.

Original language | English |
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Pages (from-to) | 121-141 |

Number of pages | 21 |

Journal | Functiones et Approximatio, Commentarii Mathematici |

Volume | 47 |

Issue number | 1 |

DOIs | |

Publication status | Published - 2012 |

## Keywords

- Algebraic independence
- Complete elliptic integrals
- Gamma function
- Nesterenko's theorem
- Ramanujan functions

## ASJC Scopus subject areas

- General Mathematics