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math.NA2022
Algebraic Multiscale Method for one--dimensional elliptic problems
Kanghun Cho, Roktaek Lim, Dongwoo Sheen
In this paper we propose an idea of constructing a macro--scale matrix system given a micro--scale matrix linear system. Then the macro--scale system is solved at cheaper computing…
math.NA2015
Nonconforming finite element method applied to the driven cavity problem
Roktaek Lim, Dongwoo Sheen
A cheapest stable nonconforming finite element method is presented for solving the incompressible flow in a square cavity without smoothing the corner singularities. The stable che…