發送短信 : Repeated-root constacyclic codes of prime power length over [Formula presented] and their duals

 _____     _    _               _____    ______   
|  __ \\  | || | ||   ____     |  ___|| |      \\ 
| |  \ || | || | ||  |    \\   | ||__   |  --  // 
| |__/ || | \\_/ ||  | [] ||   | ||__   |  --  \\ 
|_____//   \____//   |  __//   |_____|| |______// 
 -----`     `---`    |_|`-`    `-----`  `------`  
                     `-`