题目：Topics in Variational Methods: Minimizations and Morse theory

    1. Lower semi-continuity and minimization with constraints; Lagrange multipliers

    2.Concentration-compactness principle; Symmetric criticality principle

    3.Nehari method; Ekeland’s variational principle

    4. positive and sign-changing solutions in bounded domain problems

    5.symmetry and symmetry breaking of positive solutions

    6. critical groups; Morse inequality; Morse lemma;

    7. Shifting Theorem; three critical point theorem

    8.critical group at infinity; multiple solutions for sublinear, superlinear, and asymptotically linear problems;

    报告人：王志强教授（犹他州立大学）

    时间：5月7,9-16号， 每天 9:00-11:00

    地点：正心楼 532

    参加人：数学系全体师生