ReduceDimension Subroutine

public subroutine ReduceDimension(this, dim, ReducedMat, solver_parameters_in)

When we want to only compute the first n eigenvalues of a matrix, this routine will project out the higher eigenvalues.

Arguments

Type	Intent	Optional	Attributes		Name
type(Matrix_ps),	intent(inout)			::	this	The starting matrix.
integer,	intent(in)			::	dim	The number of eigenvalues ot keep.
type(Matrix_ps),	intent(inout)			::	ReducedMat	a dimxdim matrix with the same first n eigenvalues as the first.
type(SolverParameters_t),	intent(in),	optional		::	solver_parameters_in	The solver parameters.

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