Jarlebring, Elias; Michiels, Wim; Meerbergen, Karl A linear eigenvalue algorithm for the nonlinear eigenvalue problem. (English) Zbl 1256.65043 Numer. Math. 122, No. 1, 169-195 (2012). A nonlinear matrix eigenvalue problem (NMEP) \(T(\lambda)x=0\) is transformed without loss of generality into a standard form \(\lambda B(\lambda)x=x\) (\(T\) and \(B\) analytic in \(\Omega\subset\mathbb{C}\)). This is then transformed into a linear operator eigenvalue problem (LOEP) of the form \(\lambda\mathcal{B}\varphi=\varphi\) (\(\varphi\in C_\infty(\mathbb{R},\mathbb{C}^n)\)). The eigenvalues of \(\mathcal{B}\) in LOEP are the reciprocals of the eigenvalues of \(B\) in the NMEP and the eigenfunction \(\varphi\) in LOEP is related to the NMEP eigenvector \(x\) by \(\varphi(\theta)=xe^{\lambda \theta}\). The classical Arnoldi method is translated in the operator terminology, hence keeping all its nice properties. Because of the definition of \(\mathcal{B}\), starting the Krylov sequence with a constant results in a sequence of (vector) polynomials. Defining an appropriate inner product allows for an efficient implementation. The generated polynomials can be expressed as a linear combination of either monomials or Chebyshev polynomials. Both of these are discussed and presented in algorithmic form and applied to numerical examples like a delay eigenvalue problem with quadratic term or an eigenvalue problem involving square roots. Reviewer: Adhemar Bultheel (Leuven) Cited in 4 ReviewsCited in 34 Documents MSC: 65H17 Numerical solution of nonlinear eigenvalue and eigenvector problems 65F15 Numerical computation of eigenvalues and eigenvectors of matrices Keywords:nonlinear eigenvalue problem; operator eigenvalue problem; Arnoldi algorithm; delay eigenvalue problem; Chebyshev polynomials; Krylov subspace method; numerical examples Software:NLEVP; SOAR; Matlab; Chebfun; ARPACK; eigs × Cite Format Result Cite Review PDF Full Text: DOI Link References: [1] Arnoldi W.: The principle of minimized iterations in the solution of the matrix eigenvalue problem. Q. Appl. Math. 9, 17–29 (1951) · Zbl 0042.12801 [2] Asakura J., Sakurai T., Tadano H., Ikegami T., Kimura K.: A numerical method for nonlinear eigenvalue problems using contour integrals. JSIAM Lett. 1, 52–55 (2009) · Zbl 1278.65072 [3] Bai Z., Su Y.: SOAR: A second-order Arnoldi method for the solution of the quadratic eigenvalue problem. SIAM J. Matrix Anal. 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