| 11. | The matrix I is the identity matrix.
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| 12. | Here is the 3d identity matrix.
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| 13. | Where I is the identity matrix.
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| 14. | Also they commute with " A " and their sum is the identity matrix.
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| 15. | When an idempotent matrix is subtracted from the identity matrix, the result is also idempotent.
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| 16. | It is assumed that the overlap matrix " S " is the identity matrix.
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| 17. | For example, take the scalar multiples of the identity matrix by integer powers of 2.
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| 18. | Where is the identity matrix and is a unit vector representing the reaction path tangent at.
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| 19. | For example the negative of the identity matrix in four dimensions ( the central inversion ),
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| 20. | The elementary matrix for any row operation is obtained by executing the operation on the identity matrix.
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