[分析] measurable func. 的等價敘述 (已解決)
課本給的 f 是 measurable func. 的定義如下:
{x屬於E:f(x)>a}都要是 measurable 的 for all finite a
然後它要我們證明 f 是 measurable 的 iff
{x屬於E: a < f(x) < ∞}是 measurable 的 for all finite a.
請問"<="要怎麼證呢?@_@a 謝謝~
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不太懂您的意思~ >"<a
可以麻煩再說得詳細一點嗎?謝謝 =D
※ 編輯: ilmvm0679 來自: 111.243.173.114 (10/13 19:48)
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