أرسل هذا في رسالة قصيرة: Mathematical Analysis of a COVID-19 SEIQR Model with Time-Varying Transmission

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