Ks. Kang et Sy. Lee, New intergrid transfer operator in multigrid method for P-1-nonconforming finite element method, APPL MATH C, 100(2-3), 1999, pp. 139-149
For a second-order elliptic boundary value problem, We develop an intergrid
transfer operator in multigrid method for the P-1-nonconforming finite ele
ment method. This intergrid transfer operator needs smaller computation tha
n previous intergrid transfer operators. Multigrid method with this operato
r converges well, (C) 1999 Elsevier Science Inc. All rights reserved.