A deterministic combination of diagonal sampling, diagonal pivoting, an extended admissibility condition, and sustained convergence checks lets ACAPP+ DCC meet prescribed tolerances on all tested acoustic volume and boundary integral operators.
Memory-efficient compression of DH2-matrices for high-frequency Helmholtz problems
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Robust Hierarchical Matrix Compression of Acoustic Volume and Boundary Integral Operators
A deterministic combination of diagonal sampling, diagonal pivoting, an extended admissibility condition, and sustained convergence checks lets ACAPP+ DCC meet prescribed tolerances on all tested acoustic volume and boundary integral operators.