Abstract
In this chapter we introduce the main ideas underlying HHO methods, using to this purpose the Poisson problem: Find \(u:\Omega \to \mathbb {R}\) such that
where Ω is an open bounded polytopal subset of \(\mathbb {R}^n\), n ≥ 2, with boundary ∂ Ω and \(f:\Omega \to \mathbb {R}\) is a given volumetric source term, assumed to be in L 2( Ω).
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Di Pietro, D.A., Droniou, J. (2020). Basic Principles of Hybrid High-Order Methods: The Poisson Problem. In: The Hybrid High-Order Method for Polytopal Meshes. MS&A, vol 19. Springer, Cham. https://doi.org/10.1007/978-3-030-37203-3_2
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