Bünger, FlorianFlorianBüngerKnüppel, FriederFriederKnüppel2021-02-112021-02-111997-03Geometriae Dedicata 3 (65): 313-321 (1997-03)http://hdl.handle.net/11420/8762Given a regular - -hermitian form on an n-dimensional vector space V over a commutative field K of characteristic ≠ 2 (n ∈ ℕ). Call an element σ of the unitary group a quasi-involution if σ is a product of commuting quasi-symmetries (a quasi-symmetry is a unitary transformation with a regular (n - 1)-dimensional fixed space). In the special case of an orthogonal group every quasi-involution is an involution. Result: every unitary element is a product of five quasi-involutions. If K is algebraically closed then three quasi-involutions suffice.en1572-916819973313321KluwerFactorizationQuasi-involutionsUnitary groupsInformatikMathematikJournal Article10.1023/A:1004949119165Other