Point group

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Science and technology

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What Wikipedia says

In geometry, a point group is a mathematical group of symmetry operations (isometries in a Euclidean space) that have a fixed point in common. The coordinate origin of the Euclidean space is conventionally taken to be a fixed point, and every point group in dimension d is then a subgroup of the orthogonal group O(d).

Excerpt from the Wikipedia article “Point group”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

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