Geodesic
Strongly regular family of boundary-fitted tetrahedral meshes of bounded $C^2$ domains
Applications of Mathematics, Tome 61 (2016) no. 3, pp. 233-251.

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We give a constructive proof that for any bounded domain of the class $C^2$ there exists a strongly regular family of boundary-fitted tetrahedral meshes. We adopt a refinement technique introduced by Křížek and modify it so that a refined mesh is again boundary-fitted. An alternative regularity criterion based on similarity with the Sommerville tetrahedron is used and shown to be equivalent to other standard criteria. The sequence of regularities during the refinement process is estimated from below and shown to converge to a positive number by virtue of the convergence of $q$-Pochhammer symbol. The final result takes the form of an implication with an assumption that can be obviously fulfilled for any bounded $C^2$ domain.
DOI : 10.1007/s10492-016-0130-1
Classification : 65N30, 65N50
Keywords: boundary fitted mesh; strongly regular family; Sommerville tetrahedron; Sommerville regularity ratio; mesh refinement; tetrahedral mesh 
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Hošek, Radim. Strongly regular family of boundary-fitted tetrahedral meshes of bounded $C^2$ domains. Applications of Mathematics, Tome 61 (2016) no. 3, pp. 233-251. doi : 10.1007/s10492-016-0130-1. http://geodesic.mathdoc.fr/articles/10.1007/s10492-016-0130-1/

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