Text this: Defining relations of invariants of two 3 × 3 matrices

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