Abstract
This paper presents ellipses as a convenient mean of representation for operating on several tensor fields. The first part of this paper discusses the representation of tensors as ellipses or ellipsoids. Two binary operators are defined inside the set of centred ellipses, intersection, and union, and their properties are studied. The second part of this paper presents an application of these operators to binary operations on metric tensor fields for the purpose of anisotropic mesh adaptation.
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