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Okay, Okay, Mathematics Can Be Underrated

Y vs RY(pi)

In “Mathematics is Overrated” I give a specific example of how bra-ket notation and linear algebra fail to develop a complete intuition for how the ubiquitous Hadamard gate is implemented. I stand by that. However, I just fielded a question about Y vs RY(pi), and the matrices of these gates are probably the quickest way to highlight the difference between them.