1. point groupMathematics
2. point cloudComputing
3. Point groupIn geometry, a point group is a group of geometric symmetries that keep at least one point fixed. Point groups can exist in a Euclidean space with any dimension, and every point group in dimension d is a subgroup of the orthogonal group O(d). Point groups can be realized as sets of orthogonal matrices M that transform point x into point y: y = M. x where the origin is the fixed point.
Read “Point group” on English Wikipedia
Read “点群” on Japanese Wikipedia
Read “Point group” on DBpedia
Read “Point group” on English Wikipedia
Read “点群” on Japanese Wikipedia
Read “Point group” on DBpedia
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