If exact inversion formulas are not available, iterative methods are the algorithms of choice. But even if exact inversion is possible, iterative methods may be preferable due to their simplicity, ...
SIAM Journal on Numerical Analysis, Vol. 54, No. 5 (2016), pp. 2750-2774 (25 pages) We consider robust iterative methods for discontinuous Galerkin (DG) H(div, Ω)-conforming discretizations of the ...
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