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#1
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૵Ẻ¹Õéà»ç¹ Compact Set äËÁ¤ÃѺ
૵ {ÚB(x,1) | ·Õè·Ø¡ x à»ç¹ÊÁÒªÔ¡º¹¨Ó¹Ç¹¨ÃÔ§áÅÐÁÕÃÑÈÁÕ 1} à»ç¹ Compact Set äËÁ¤ÃѺ
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#2
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¹ÔÂÒÁ $B(x,1)$ ãËé´Ù˹èͤÃѺ
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site:mathcenter.net ¤Ó¤é¹ |
#3
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B(x,1) à»ç¹Ç§¡ÅÁ ·ÕèÁըشÈÙ¹Âì¡ÅÒ§ x áÅÐÃÑÈÁÕ 1 º¹»ÃÔÀÙÁÔ ¨Ó¹Ç¹¨ÃÔ§ÊͧÁÔµÔ
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#4
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¶éÒäÁèÃÇÁ¢Íº´éÇ $B(x,1)$ ¨ÐäÁèà»ç¹ closed set ¨Ö§äÁè compact ¤ÃѺ
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site:mathcenter.net ¤Ó¤é¹ |
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ªèǾÔÊÙ¨¹ìàÃ×èͧ compact set ˹è͹ФÃѺ ¤Ô´äÁèÍÍ¡ÍÐ | áÁ· à·¾ | Calculus and Analysis | 2 | 02 ¡Ã¡®Ò¤Á 2010 21:50 |
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