pseudoreflection

Fetched 2026-10-26 (cache).

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Noun

1. {{lb|en|mathematics}} An invertible linear transformation of a finite-dimensional vector space such that it is not the identity transformation, has a finite (multiplicative) order, and fixes a hyperplane.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.