發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Frames over finite fields: equiangular lines in orthogonal geometry