# Missing $inserted (multicolumn) \multirow{2}{*}{Part} & \multicolumn{2}{|c|}{\sigma_{I}} & \multicolumn{2}{|c|}{\sigma_{II}} \\ \cline{2-5} I am compiling this code, I am getting the error Missing$ inserted and after that it is giving me the desired result. But still I dont wan't any errors in my code.

-
Welcome to TeX.SX! –  egreg Nov 29 '12 at 15:04

\multicolumn{2}{|c|}{$\sigma_{I}$}