發送短信 : Defining relations of invariants of two 3 × 3 matrices

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