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  _____      ___      ______    ______    _  __  
 |__  //    / _ \\   /_   _//  /_   _//  | |/ // 
   / //    | / \ ||  `-| |,-    -| ||-   | ' //  
  / //__   | \_/ ||    | ||     _| ||_   | . \\  
 /_____||   \___//     |_||    /_____//  |_|\_\\ 
 `-----`    `---`      `-`'    `-----`   `-` --`

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Text this: Global minimum variance portfolio : an application to the Singapore stock market