| 1. | Of course, orthogonality is a property that must be verified.
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| 2. | It is difficult to check numerically the linear dependence or exact orthogonality.
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| 3. | Therefore, the notion of ?-orthogonality is used.
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| 4. | With the advent of orthogonality, to ease compiler implementation.
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| 5. | However, it follows from the orthogonality that is unitary.
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| 6. | Orthogonality is guaranteed by the symmetry of the correlation matrices.
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| 7. | The third is true because orthogonality is a symmetric relation.
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| 8. | Nevertheless they retain their mutual orthogonality which is what facilitates the decomposition.
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| 9. | It doesn't mention the orthogonality of Hermitian-matrix eigenvectors.
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| 10. | The orthogonality relations can then be stated in two parts:
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