Zi Collection, Page Position: Upper, Radical: Corpse (shī), Page 1350, Entry 07
The character 居 (jū) is an ancient form of the character 居 (jū). See entry under Radical: Corpse (shī), stroke 5.
According to the Shuowen Xixun (說文先訓), the ancient script for 居 (jū), meaning to reside, was derived from the Radical: Roof (mián). The character 居 (jū) currently in use actually means arrogant.