Abstract
In this chapter, we shall consider two special topics related to the approximation of saddle-point problems. The first one is about stabilised methods, which are more and more widely used in many applications where it is difficult to build approximations satisfying both the ellipticity in the kernel and the inf-sup properties. The second section will be devoted to an abstract presentation of eigenvalue problems for mixed problems, where an emphasis will be put on both necessary and sufficient conditions.
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Boffi, D., Brezzi, F., Fortin, M. (2013). Complements: Stabilisation Methods, Eigenvalue Problems. In: Mixed Finite Element Methods and Applications. Springer Series in Computational Mathematics, vol 44. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36519-5_6
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DOI: https://doi.org/10.1007/978-3-642-36519-5_6
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