Valuations and differential Galois groups
Guillaume Duval
In this paper, valuation theory is used to analyse infinitesimal behaviour of solutions of linear differential equations. For any Picard-Vessiot extension $(F / K, \partial)$ with differential Galois group $G$, the author looks at the valuations of $F$ which are left invariant by $G$. The main reason for this is the following: If a given invariant valuation $\nu$ measures infinitesimal behaviour of functions belonging to $F$, then two conjugate elements of $F$ will share the same infinitesimal behaviour with respect to $\nu$. This memoir is divided into seven sections
Категорії:
Рік:
2011
Видавництво:
Amer Mathematical Society
Мова:
english
Сторінки:
82
ISBN 10:
0821849069
ISBN 13:
9780821849064
Серії:
Memoirs of the American Mathematical Society 0998
Файл:
PDF, 688 KB
IPFS:
,
english, 2011