A note on $G$-operators of order $2$
A note on $G$-operators of order $2$
复制标题
关于$G$-订单$2$的运算符的注释
DOI:
10.4064/cm8600-3-2022
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发表时间:
2021
影响因子:
0.4
通讯作者:
T. Rivoal
中科院分区:
文献类型:
--
作者:
S. Fischler;T. Rivoal
It is known that G-functions solutions of a linear differential equation of order 1 with coefficients in Q(z) are algebraic (of a very precise form). No general result is known when the order is 2. In this paper, we determine the form of a G-function solution of an inhomogeneous equation of order 1 with coefficients in Q(z), as well as that of a G-function f of differential order 2 over Q(z) and such that f and f ′ are algebraically dependent over C(z). Our results apply more generally to holonomic Nilsson-Gevrey arithmetic series of order 0 that encompass G-functions.