@article{Gatica_2018, title={An equivalent formulation for variational problems with constraints}, volume={8}, url={https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/2591}, DOI={10.22199/S07160917.1990.0016.00002}, abstractNote={<p>The main purpose of this paper is to reconsider the studying of existence, uniqueness and approximation of solution to a variational problem with constraints. Under certain assumptions on the bilinear forms involved it is proved that the original formulation is equivalent to a simplified version of it on smaller spaces. By applying the usual Brezzi’s theory to this new formulation a modified Babuska-Brezzi condition is deduced.</p>}, number={16}, journal={Proyecciones (Antofagasta, On line)}, author={Gatica, Gabriel N.}, year={2018}, month={Apr.}, pages={17-39} }