أرسل هذا في رسالة قصيرة: On the Sigma Value and Sigma Range of the Join of a Finite Number of Even Cycles of the Same Order

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