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math.NA2019
The surrogate matrix methodology: Low-cost assembly for isogeometric analysis
Daniel Drzisga, Brendan Keith, Barbara Wohlmuth
A new methodology in isogeometric analysis (IGA) is presented. This methodology delivers low-cost variable-scale approximations (surrogates) of the matrices which IGA conventionall…
math.NA2019
The surrogate matrix methodology: a priori error estimation
Daniel Drzisga, Brendan Keith, Barbara Wohlmuth
We give the first mathematically rigorous analysis of an emerging approach to finite element analysis (see, e.g., Bauer et al. [Appl. Numer. Math., 2017]), which we hereby refer to…