أرسل هذا في رسالة قصيرة: On the set chromatic number of the join and comb product of graphs

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