No need for finding / calculating any phi or angle here. Just simpler than it is written.
Back to basics 15 - Benchmark
Getting the indices from a vector
Make a run-length companion vector
Permute diagonal and antidiagonal
length of a vector
How many days does the cat take to climb out of the hole?
Is this matrix orthogonal?
Find the Kronecker Tensor Product without using KRON
Find the nearest integer
Find the largest value in the 3D matrix
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