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The above definition of the skeleton of a simplicial complex is a particular case of the notion of skeleton of a simplicial set. Briefly speaking, a simplicial set K ∗ {\displaystyle K_{*}} can be described by a collection of sets K i , i ≥ 0 {\displaystyle K_{i},\ i\geq 0} , together with face and degeneracy maps between them satisfying a ...
The category Set of all sets has the subcategory of all cardinal numbers as a skeleton.; The category K-Vect of all vector spaces over a fixed field has the subcategory consisting of all powers (), where α is any cardinal number, as a skeleton; for any finite m and n, the maps are exactly the n × m matrices with entries in K.
The skeleton usually emphasizes geometrical and topological properties of the shape, such as its connectivity, topology, length, direction, and width. Together with the distance of its points to the shape boundary, the skeleton can also serve as a representation of the shape (they contain all the information necessary to reconstruct the shape).
The shrinking process, the straight skeleton (blue) and the roof model. In geometry, a straight skeleton is a method of representing a polygon by a topological skeleton.It is similar in some ways to the medial axis but differs in that the skeleton is composed of straight line segments, while the medial axis of a polygon may involve parabolic curves.
In mathematics, topology (from the Greek words τόπος, 'place, location', and λόγος, 'study') is concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling and bending, but not tearing or gluing.
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