Text this: On the set chromatic number of the join and comb product of graphs

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