A geometric approach to invariant subspaces of orthogonal matrices

• Published in: American Mathematical Monthly, vol. 89, num. 10, p. 751
• Publication date: 1982

This note gives a short, geometrically based, proof that a real orthogonal matrix has a normal form consisting of a direct sum of 1$times 1$ and 2$times 2$ blocks.

Reference

• EPFL-ARTICLE-161408
• doi:10.2307/2975837

Record created on 2010-12-03, modified on 2017-05-12