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- where the last matrix on the right is the [[identity matrix]] '''I'''. Now23 KB (3,852 words) - 20:27, 9 January 2021
- where '''E'''<sub>''ℓ''</sub> is the 2''ℓ''+1 dimensional [[identity matrix]]. because '''R'''<sup>T</sup>'''R''' is equal to the 3 × 3 identity matrix.34 KB (5,282 words) - 14:21, 1 January 2011
- The last property is the analogy of the multiplication of two [[identity matrix|identity matrices]],14 KB (2,220 words) - 12:28, 26 October 2021
- 13 KB (1,900 words) - 10:49, 30 November 2009