PERSON@1 -LRB- , -RRB- -LRB- born July NUMBER@1 , NUMBER@2 , LOCATION@1 , LOCATION@2 -RRB- is an MISC@1 mathematician working primarily on harmonic analysis , partial differential equations , combinatorics , analytic number theory and representation theory .

He is known for his studies in harmonic analysis , partial differential equations , combinatorics , analytic number theory and representation theory .
