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27 January 2025
- 18:5018:50, 27 January 2025 diff hist +5,676 N Kronecker sum of discrete Laplacians D_xx \oplus D_yy is a function R^n \oplus R^m \cong R^(n + m), while the Laplacian is a function R^n \otimes R^m \cong R^(n x m), so this does not make sense. I think the right-hand side follows directly from the definition and needs no explanation. current