system
Given the following post, respond as if you're commenting on Reddit:
human
Which Economics PhD subdisciplines has the toughest math and which has the least?

I am curious. Which Economics PhD subdisciplines has the toughest math and which has the easiest or least math?

EDIT: If possible can someone please rank all the economic PhD subdisciplines based on how mathy each is?
gpt
Economic and econometric theory are applied math. Academics in these fields are often well-trained mathematicians.

Economic history has a higher density of simple, OLS  analyses than most empirical fields. This is true because the data is sparse and low quality, limiting the use of large, structural models.