https://yutsumura.com/a-matrix-commuting-with-a-diagonal-matrix-with-distinct-entries-is-diagonal/ Thu, 14 Dec 2017 16:06:54 +0000 hourly 1 https://wordpress.org/?v=5.3.4 https://yutsumura.com/a-matrix-commuting-with-a-diagonal-matrix-with-distinct-entries-is-diagonal/#comment-4517 Thu, 14 Dec 2017 16:06:54 +0000 https://yutsumura.com/?p=3339#comment-4517 This follows from the definition of the matrix product $AD$. Please review how $AD$ is defined.

]]> https://yutsumura.com/a-matrix-commuting-with-a-diagonal-matrix-with-distinct-entries-is-diagonal/#comment-4513 Thu, 14 Dec 2017 15:20:22 +0000 https://yutsumura.com/?p=3339#comment-4513 How did value “aijdj” derived from the summation (The (i,j)-entry of AD is – sentence). Please explain.

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