The Malloreon is a five-part fantasy book series written by David Eddings, which follows "The Belgariad". The Malloreon is set in the same world as The Belgariad, but expands on several aspects of the setting, especially the eastern continent of Mallorea.

Based on the paragraph above can we conclude that "The Malloreon and The Belgariad were written by the same person."?
Yes