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Old 18 ÊÔ§ËÒ¤Á 2016, 21:39
innocent innocent äÁèÍÂÙèã¹Ãкº
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Çѹ·ÕèÊÁѤÃÊÁÒªÔ¡: 18 ÊÔ§ËÒ¤Á 2016
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innocent is on a distinguished road
Default àÁ·ÃÔ¡«ì

¨§áÊ´§ÇèÒ¶éÒ A>0 áÅéÇ àÁ·ÃÔ¡«ì A^1/2 * A^1/2 = A ͸ԺÒÂÇÔ¸Õ¡ÒÃËÒ A^1/2 áÅÐáÊ´§ÇèÒ A^1/2 à»ç¹ symmetic HINT. ãªé eigenvalue decomposition ¢Í§ symmetric metric
A>0 ã¹·Õè¹ÕéËÁÒ¶֧
-all eigenvalues of A are non-negative
-all principle minors of A are non-negative

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