發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Recursive Linear Bounds for the Vertex Chromatic Number of the Pancake Graph