2026-04-17T00:35:31Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/3775562024-12-20T13:59:11Zcom_2072_199267com_2072_4427col_2072_199862

MULTIGRID PRECONDITIONER FOR NONCONFORMING DISCRETIZATION OF ELLIPTIC PROBLEMS WITH JUMP COEFFICIENTS Ayuso de Dios, B. Holst, M. Zhu, Y. Zikatanov, L. linear system arising from the piecewise linear nonconforming Crouzeix-Raviart discretization of second order elliptic problems with jump coefficients. The preconditioner uses the standard conforming subspaces as coarse spaces. Numerical tests show both robustness with respect to the jump in the coefficient and near-optimality with respect to the number of degrees of freedom. 2020-10-14T12:06:32Z 2024-09-19T13:23:36Z 2020-10-14T12:06:32Z 2024-09-19T13:23:36Z 2020-10-14T12:06:32Z 2024-09-19T13:23:36Z 2011-01-01 info:eu-repo/semantics/preprint http://hdl.handle.net/2072/377556 eng CRM Preprints info:eu-repo/semantics/openAccess L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by-nc-nd/4.0/ RECERCAT (Dipòsit de la Recerca de Catalunya)