發送短信

數:

提供者:

CAPTCHA:

           __   __   _    _    _    _             
    ___    \ \\/ // | \  / || | || | ||   ____    
   /   ||   \ ` //  |  \/  || | || | ||  |    \\  
  | [] ||    | ||   | .  . || | \\_/ ||  | [] ||  
   \__ ||    |_||   |_|\/|_||  \____//   |  __//  
    -|_||    `-`'   `-`  `-`    `---`    |_|`-`   
     `-`                                 `-`

Please enter what you see:

發送短信 : Constructions of relative difference sets with classical parameters and circulant weighing matrices