Abstract
In the six-dimensional space \(\Lambda_2(\mathbb{R}^4)\) of bivectors, a Lie product similar to the standard vector product in \(\mathbb{R}^3\) is introduced. The Lie algebra constructed is proved to be isomorphic to the Lie algebra of the orthogonal group \(O(\mathbb{R}^4)\), and the isomorphism is a canonical isometry between \(\Lambda_2(\mathbb{R}^4)\) and the space of antisymmetric operators in \(\mathbb{R}^4\). Bibliography: 2 titles.
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REFERENCES
Yu. D. Burago and V. A. Zalgaller, Introduction to Riemannian Geometry [in Russian], Nauka, St. Petersburg (1994).
S. E. Kozlov, “Geometry of real Grassmann manifolds. I, II” Zap. Nauchn. Semin. POMI, 146, 84-107 (1997).
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Kozlov, S.E., Nikanorova, M.Y. The Geometry of the Lie Algebra of the Orthogonal Group O(ℝ4). Journal of Mathematical Sciences 110, 2820–2823 (2002). https://doi.org/10.1023/A:1015354329606
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DOI: https://doi.org/10.1023/A:1015354329606