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By default, \finley is using the iterative solvers \PCG for symmetric and \BiCGStab for nonsymmetric problems. 
By default, \finley is using the iterative solvers \PCG for symmetric and \BiCGStab for nonsymmetric problems. 
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If the direct solver is selected which can be useful when solving very illposed equations 
If the direct solver is selected which can be useful when solving very illposed equations 
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\finley uses the \MKL \footnote{If the stiffness matrix is nonregular \MKL may return without 
\finley uses the \MKL \footnote{If the stiffness matrix is nonregular \MKL may return without 
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returning a proper error code. If you observe suspicious solutions when using MKL, this may cause by a noninvertible operator. } solver package. If \MKL is not available \UMFPACK is used. If \UMFPACK is not available 
returning a proper error code. If you observe suspicious solutions when using MKL, this may be caused by a noninvertible operator. } solver package. If \MKL is not available \UMFPACK is used. If \UMFPACK is not available 
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a suitable iterative solver from the \PASO is used. 
a suitable iterative solver from the \PASO is used. 
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\section{Functions} 
\section{Functions} 