(1) new york University. Courand Institute of Mathematical Sciences of new york University was founded by richard courant at that time, and it was undoubtedly a leader in the field of mathematics. Especially in its heyday, peter lax, Louis Nirenberg, Kurt Frederick and others gathered together, and CIMS was powerful.

(2) UCLA. The main advantages of UCLA are number theory, analysis, mathematical physics and so on. The school is located in the downtown area of Los Angeles, and the rent is nearly $1,000 a month. Life may be tight, but the school is still very good. Although TSE wrote the main points on the homepage, it is not necessary in actual operation, and it is not necessary to issue GRE/TOEFL official scores before entering school.

(3) University of Texas at Austin. The Department of Mathematics at the University of Texas at Austin has full-time teachers and different numbers of honorary professors, and there are about 50 temporary or part-time members. Among them, some professors have interdisciplinary research in other disciplines, such as computer science, curriculum and teaching, and general business.

(4) London Imperial College London. The Department of Mathematics in Imperial College London is one of the largest in the corrupt country, with 750 undergraduates studying different majors. Its entrance threshold is parallel to Oxford and Cambridge, requiring students to get an A in mathematics. Imperial College London is located in the center of London, just a few steps away from London's major museums.