Define a coordinate system structure and its operations to simplify coordinate system transformation operations. Can be used as an alternative to matrices and tensors.

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Or f(X) = X⁻¹ gives f'(X)[dX] = –X⁻¹ dX X⁻¹. These are perfectly good linear operators acting on matrices dX, even though they are not written in the form (Jacobian matrix)×(column vector)! (We could ...

The first thing to know about the Department of Government Efficiency is that it doesn’t exist.

In the wake of the COVID-19 pandemic, student performance fell across much of the United States. According to a new study of 2022 math and reading scores, however, North Carolina students suffered one ...

North Carolina tumbled to 29th. Among previously high-performing states, only Maryland suffered a bigger drop than we did.

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In the wake of the COVID-19 pandemic, student performance fell across much of the United States. According to a new study of ...