Text this

Number:

Provider:

CAPTCHA:

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

Please enter what you see:

Text this: Number Theory in Science and Communication with applications in cryptography, physics, digital information, computing and self-similarity (Fifth edition)