Namely, is there a difference between $\mathbb{R}^{n \times n}$, $\mathbb{R}^{n, n}$ and $\mathbb{M}_{n\times n}(\mathbb{R})$?
If so, what is/are the difference(s)?
2026-04-26 03:02:14.1777172534
Correct notation for set of matrices
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