Abstract
In preceding papers [10]-[15], a class of matrices (H-matrices) has been analysed which are data-sparse and allow an approximate matrix arithmetic of almost linear complexity. Several types of H-matrices were shown to provide good approximation of nonlocal (integral) operators in FEM and BEM applications.
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Hackbusch, W., Khoromskij, B.N. (2001). Towards H—Matrix Approximation of Linear Complexity. In: Elschner, J., Gohberg, I., Silbermann, B. (eds) Problems and Methods in Mathematical Physics. Operator Theory: Advances and Applications, vol 121. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8276-7_13
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