The “dagger” indicates a pseudoinverse, not a transpose, which is why this works even with non-orthonormal U. But an orthonormal basis would probably be most convenient; in that case the pseudoinverse is just the transpose.
Thanks!
The “dagger” indicates a pseudoinverse, not a transpose, which is why this works even with non-orthonormal U. But an orthonormal basis would probably be most convenient; in that case the pseudoinverse is just the transpose.
Thanks!