أرسل هذا في رسالة قصيرة: A note on asymptotic stability conditions for delay difference equations

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