TY - GEN A1 - Carstensen, Carsten A1 - Gedicke, Joscha A1 - Rim, Donsub T1 - Explicit Error Estimates for Courant, Crouzeix-Raviart and Raviart-Thomas Finite Element Methods N2 - The elementary analysis of this paper presents explicit expressions of the constants in the a priori error estimates for the lowest-order Courant, Crouzeix-Raviart nonconforming and Raviart-Thomas mixed finite element methods in the Poisson model problem. The three constants and their dependences on some maximal angle in the triangulation are indeed all comparable and allow accurate a priori error control. Y1 - 2011 UR - https://opus4.kobv.de/opus4-matheon/frontdoor/index/index/docId/931 UR - https://nbn-resolving.org/urn:nbn:de:0296-matheon-9314 ER -