Boyanova, P.; Georgiev, I.; Margenov, S.; Zikatanov, L. - In: Mathematics and Computers in Simulation (MATCOM) 82 (2012) 10, pp. 1964-1971
We consider the discrete system resulting from mixed finite element approximation of a second-order elliptic boundary value problem with Crouzeix–Raviart non-conforming elements for the vector valued unknown function and piece-wise constants for the scalar valued unknown function. Since the...