If {u1, u2,..., uk} is an orthonormal set of vectors in Rn and U = (ul, u2, uk) then UUT = In (the n n identity matrix).
If {u1, u2,..., uk} is an orthonormal set of vectors in Rn and
U = (ul, u2, uk)
then UUT = In (the n × n identity matrix).
U = (ul, u2, uk)
then UUT = In (the n × n identity matrix).
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