2022
DOI: 10.1002/mma.7894
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Hilbert complexes with mixed boundary conditions part 1: de Rham complex

Abstract: We show that the de Rham Hilbert complex with mixed boundary conditions on bounded strong Lipschitz domains is closed and compact. The crucial results are compact embeddings which follow by abstract arguments using functional analysis together with particular regular decompositions. Higher Sobolev order results are proved as well.

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Cited by 15 publications
(51 citation statements)
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“…Higher Sobolev order results are also proved. This paper extends recent results on the de Rham and elasticity Hilbert complexes with mixed boundary conditions from [3,4] and results on the biharmonic Hilbert complex with empty or full boundary conditions from [6].…”
supporting
confidence: 83%
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“…Higher Sobolev order results are also proved. This paper extends recent results on the de Rham and elasticity Hilbert complexes with mixed boundary conditions from [3,4] and results on the biharmonic Hilbert complex with empty or full boundary conditions from [6].…”
supporting
confidence: 83%
“…We shall follow in close lines the rationale from [3,4]. The main results comprise regular decompositions and regular potentials, compact embeddings, Helmholtz decompositions, closed ranges, Friedrichs/Poincaré type estimates, and bases of the corresponding cohomology groups (generalised Dirichlet/Neumann tensors).…”
Section: Introductionmentioning
confidence: 91%
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“…For the sake of clarity we write H( Ω, div, S) and H Γ1 ( Ω, div, S) for the corresponding spaces on the parametric domain. For more information about such spaces with boundary conditions we refer to the articles [20,21]. In latter references the explanations are for the three-dimensional case, but they can be adapted easily to planar domains.…”
Section: An Auxiliary Mixed Bc Problemmentioning
confidence: 99%
“…The key trace operators and trace spaces associated with the Euclidean de Rham complex in three space dimensions have already been introduced 5 We denote by σ the surface measure on the boundary. 6 For the functional analytic foundations, we refer to parts of the FA-ToolBox from [35,Sec. 2], which is a compilation of useful functional analysis results that grew from its use in previous works, cf.…”
mentioning
confidence: 99%