The splitsys function returns the received set of equations split, as much as possible, into subsets of equations mutually coupled, but not coupled with the equations of the other subsets. This splitting of the set may be useful for solving the system.

This function is part of the PDEtools package, and so it can be used in the form splitsys(..) only after executing the command with(PDEtools). However, it can always be accessed through the long form of the command by using PDEtools[splitsys](..).