Title:Local Decompositions of Second Order Infinite-Dimensional SystemsAuthor(s):Hubert Rams, Markus Schöberl, Kurt SchlacherAbstract:This article deals with the local system decomposition of infinite-dimensional systems, which are described by second-order nonlinear partial differential equations. It will be shown that the existence of a certain codistribution allows a local triangular decomposition of the generalized system vector field and the boundary conditions. Based on this triangular decomposition, non-accessibility follows by a simple structural analysis. Throughout the article differential geometric methods are applied, highlighting the geometric picture behind the system description.Booktitle:Proceedings in Applied Mathematics and MechanicsPublisher:Wiley-VCH Verlag GmbH & Co. KGaAPage Reference:page 825–826, 2 page(s)Publishing:10/2016Volume:16Number:1