Invariants and differential Galois groups in degree four
Volume 58 / 2002
Banach Center Publications 58 (2002), 79-87
MSC: Primary 12H99
DOI: 10.4064/bc58-0-7
Abstract
This note extends the algorithm of [hess] for computing unimodular Galois groups of irreducible differential equations of order four. The main tool is invariant theory.