True or false: If Q I is a 4 4 orthogonal matrix, then Q

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True or false: If Q ≠ ± I is a 4 × 4 orthogonal matrix, then Q has no real invariant subspaces.

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Applied Linear Algebra

ISBN: 9783319910406

2nd Edition

Authors: Peter J. Olver, Chehrzad Shakiban

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