https://digitalcommons.mtu.edu/michigantech-p/1224/
"A shifted-inverse adaptive multigrid method for the elastic eigenvalue" by Bo Gong, Jiayu Han et...
A shifted-inverse iteration is proposed for the finite element discretization of the elastic eigenvalue problem. The method integrates the multigrid scheme and...
multigrid methodfor thejiayu hanshiftedinverse