Text this

Number:

Provider:

CAPTCHA:

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

Please enter what you see:

Text this: The demiclosed principle for multi-valued nonexpansive mappings in Banach spaces