[問題] 關於Hilbert space的一些問題
小弟我最近在學校修物理數學(三)
裡面在介紹一些量物要用到的數學基礎
但是以下兩個名詞我已經查了無數資料但是就是看不懂啊~
第一個是Hilbert space,我只覺得好像只要是完備的內積空間就是Hilbert space
,但是到底要怎麼判斷一個set有沒有在Hilbert space裡面啊? 還有有沒有什麼更簡易好懂的方法來理解什麼是Hilbert space....
第二個就是到底要怎麼判斷是否具有完備性,我查到的資料有提到什麼柯西序列的,但是那實在是很難理解的一個東西,有看沒有懂...
跪求板上物理知識雄厚的人們幫我解惑了
能解釋的越簡單理解越好QQ
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