發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : On the algebraic structure of quasi-cyclic codes II : chain rings