Text this

Number:

Provider:

CAPTCHA:

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

Please enter what you see:

Text this: On cyclic reduction and finite difference schemes