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Approximation of boundary element matrices. (English) Zbl 0966.65094
Author’s abstract: This article considers the problem of approximating a general asymptotically smooth function in two variables, typically arising in integral formulations of boundary value problems, by a sum of products of two functions in one variable. From these results an iterative algorithm for the low-rank approximation of blocks of large unstructured matrices generated by asymptotically smooth functions is developed. This algorithm uses only few entries from the original block and since it has a natural stopping criterion the approximative rank is not needed in advance.

MSC:
65N38 Boundary element methods for boundary value problems involving PDEs
65F30 Other matrix algorithms (MSC2010)
35J25 Boundary value problems for second-order elliptic equations
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