Concepedia

Approximation of the Quadratic Numerical Range of Block Operator Matrices

Ahmed Muhammad, Marco Marletta

Integral Equations and Operator Theory · 2012 · 14 citations · 5 references

Concepts

ComputingComputational EngineeringFinite Element MethodsApproximation AlgorithmsConvergence AnalysisMatrix ComputationNumerical AnalysisNumerical Linear AlgebraOperator TheoryBlock Matrix AlgorithmsLow-rank ApproximationNumerical DiscretizationSparse Matrix AlgorithmsSparse Matrix Techniques

References

5

Zur Stabilität zylindersymmetrischer Plasmakonfigurationen mit Volumenströmen

K. Hain, R. Lüst · Zeitschrift für Naturforschung A · 1958 · 165 citations · Full text

Natural Sciences, Physics, Electroanalytical Methods +11

A new concept for block operator matrices:the quadratic numerical range

Heinz Langer, A. Markus, V. Matsaev et al. · Linear Algebra and its Applications · 2001 · 68 citations

Natural Sciences, Mathematics, Computational Mechanics +10

Spectral inclusion for unbounded block operator matrices

Christiane Tretter · Journal of Functional Analysis · 2009 · 61 citations

Natural Sciences, Petroleum Engineering, Dynamical Systems +11

SPECTRAL DECOMPOSITION OF SOME NONSELFADJOINT BLOCK OPERATOR MATRICES

Heinz Langer, Christiane Tretter · 2007 · 52 citations

Natural Sciences, Electrical Engineering, Finite Element Analysis +11

The Block Numerical Range of an <i>n</i> × <i>n</i> Block Operator Matrix

Christiane Tretter, Markus Wagenhofer · SIAM Journal on Matrix Analysis and Applications · 2003 · 21 citations

Natural Sciences, Computer Science, Computational Mechanics +16