[線代] Matrix measure

[robertshih (施抄)]

                                ║I+εA║-║I║
定義 matrix measure m(A) = lim  ────────
                          ε→0        ε

(║‧║是induced matrix norm)

想請問一下這個matrix measure所代表的意義大概會是什麼

感覺很抽象... 謝謝

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