### Abstract

Let k be a differential field of characteristic 0, and Ω be a universal extension of k. Suppose that the field of constants k_{0} of k is algebraically closed. Consider the following differential polynomial of the first order over k in a single indeterminate y: T(y) = (y′)^{2} - λS (y; k) λ ∈ k; λ ≠ 0; here S(y; k) = y(1 - y)(1 - κ^{2}y); κ ∈ k; k^{2} ≠ 0, 1; k′ = 0. Take a generic point z of the general solution of T. Then, z is transcendental over k, and k(z, z′) is called a differential elliptic function field. We prove the following: THEOREM. Let k(z, z′) be a differential elliptic function field over k. Then, there exists a finitely generated differential extension field k* of k such that the following three conditions are satisfied: (i) z is transcendental over k*; (ii) the field of constants of k* is the same as k_{0}; (iii) there exists an element ζ of Ω such that k*(z, z′) = k*(ζ, ζ′) and (ζ′)^{2} = 4S(ζ; κ) with the same modulus as κ.

Original language | English |
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Pages (from-to) | 191-197 |

Number of pages | 7 |

Journal | Pacific Journal of Mathematics |

Volume | 74 |

Issue number | 1 |

Publication status | Published - 1978 |

Externally published | Yes |

### ASJC Scopus subject areas

- Mathematics(all)

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## Cite this

*Pacific Journal of Mathematics*,

*74*(1), 191-197.