Abstract
In these expository notes we draw together and develop the ideas behind some recent progress in two directions: the treatment of finite type partial differential operators by prolongation, and a class of differential complexes known as detour complexes. This elaborates on a lecture given at the IMA Summer Programme “Symmetries and overdetermined systems of partial differential equations”.
The author would like to thank the Institute for Mathematics & Its Applications, University of Minnesota, and also the organisers of the 2006 Summer Programme there “Symmetries and overdetermined systems of partial differential equations”. Special thanks are due to Tom Branson, a friend, a colleague and a mentor. It is my understanding that his enthusiasm and work contributed significantly to the occurrence and organisation of the meeting. It is part of the tragedy of his departure that he did not get to enjoy the realisation of this event.
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Rod Gover, A. (2008). Invariant Prolongation and Detour Complexes. In: Eastwood, M., Miller, W. (eds) Symmetries and Overdetermined Systems of Partial Differential Equations. The IMA Volumes in Mathematics and its Applications, vol 144. Springer, New York, NY. https://doi.org/10.1007/978-0-387-73831-4_19
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