2008: Research Institute of Mathematics (Chern Institute), Nankai University, China.

2008: Department of Mathematics, Sandong University (Weihai Campus), China.

2008: Conference on Operator Theory (related to geometry), Quianhuandao, China.

2007: Department of Mathematics, Suzhou University, China.

2005: International Conference on Partial Differential Equations and Its Application to Geometry and Physics, Shanghai, China.

2005: SE Analysis Meeting, Lexington, VA.

2004: Special Session of American Mathematical Society, Nashville, TN

2004: Chinese Functional Analysis Conference, Shanghai.

2004: SE Analysis Meeting, Tuscaloosa, AL

2003: Analysis Seminar, Department of Mathematics, York University, Canada

2003: Seminar in Research Institute of Mathematics, and Colloquium in the Department of Mathematics, Fundan University, Shanghai

2002: Research Institute of Mathematics, Sangdong University, Jijiang, China

2001: Special Session, American Mathematical Society, New Orleans, LA

2000: Departments of mathematics, Zhejiang University, Nanjing University, China

1999: Department of Mathematics, Fudan University, Shanghai

1999: Special Session of American Mathematical Society Annual Meeting, Gainesville, FL

1998: SE Analysis Meeting, Tuscaloosa, AL (March)

1997: Analysis Seminar, Department of Mathematics, York University, CN

1997: SE Analysis Meeting, Gainesville, FL

1996: Special Session, American Mathematical Society, Iowa City, IA

1996: Research Institutes of Mathematics or Departments of Mathematics, Academy Sinica, Tapei and Beijing, National Central University, Taiwan, Normal University of East China, Shanghai, and National Jiao Tong University, Taiwan

1996: Annual Meeting of the American Mathematical Society, Orlando, FL

1995: Canadian Operator Symposium, Waterloo, CN

1995: SE Analysis Meeting, Atlanta, GA

1995: GPOTS, Cincinnati, OH

1995: Annual Meeting of the American Mathematical Society, San Francisco, CA

1995: International Workshop of Operator Theory & its Applications, Regensburg, Germany

1995: Canadian Operator Symposium, Waterloo, CN

1995: SE Conference on Analysis, Atlanta, GA

1995: GPOTS, Cincinnati, OH

1995: Annual Meeting of the American Mathematical Society, San Francisco, CA

1994: GPOTS, NE

1994: Seminar of Operator Theory, SUNY, Buffalo

1994: International Operator Theory Workshop, Banach Center, Polish Academy of Science

1994: SE Analysis Meeting, VA

1994: Summer Research Conference of Multivariable Operator Theory, Seattle, W A Functional Analysis Colloquium, University of California, Berkeley

1993: Departments of Mathematics, Hong Kong Chinese University, Hong Kong University of Science and Technology, Hong Kong University

1992: Special Session of American Mathematical Society, Tuscaloosa. AL

1992: SE Analysis Meeting, Knoxville, TN

1991: Seminar of Operator Theory, SUNY, Buffalo

1991: GPOTS, Austin, TX

1991: Conference of Analysis, Charlotte, NC

1991: Annual Meeting of the American Mathematical Society, San Francisco, CA

1990: Annual Meeting of the American Mathematical Society, Louisville, KY

1990: GPOTS, Albuquerque, NM

1989: Functional Analysis Seminars, SUNY at Buffalo and Stony Brook

1989: GPOTS, Houston, TX

1988: Functional Analysis Seminar, Purdue University

1988: Summer School of Operator Theory & Operator Algebra, New Hampshire

1988: SE Analysis Meeting, VA

1987: Analysis Meeting, Tuscaloosa. AL

1987: Great Plains Operator Theory Symposium (GPOTS), Lawrence, KS

1987: Conference of Functional Analysis, Tempe, AZ

1987: Departments of Mathematics, Purdue University, SUNY at Buffalo, and Indiana University Purdue University at Indianapolis

1987: Wabash Extramural Functional Analysis Seminar, IN

1986: Conference on Operator Theory, Bloomington, IN

1986: International Congress of Mathematics

1986: Southeast (SE) Analysis Meeting, Chapel Hill, NC SE

1985: Lectured in conferences in Berkeley, Santa Barbara, CA, Iowa City and NE

1984: Departments of Mathematics, University of Maryland, University of Florida, Wayne State University, Cleveland State University, Vanderbilt University, San Diego State University

1984: International Colloquium of Complex Analysis, Microlocal Calculus and Relativistic Quantum Theory, France

1983-1985: Fifth International Conference of Mathematical Physics, Switzerland

1983: Departments of Mathematics, University of Notre Dame, State University of Iowa, University of Delaware, University of Houston, Princeton

1982: Conferences of Hannonic Analysis, and Representations of Lie Groups, University Bielfield and Mathematisches Forschungsinstitiit Oberwolfach

1981: 6th International Conference of Mathematical Physics, West Berlin

1981: Department of Mathematics, Universitat Munchen

1980: Departments of Mathematics or Seminars of Functional Analysis and Operator Theory at the University of California, Berkeley, Los Angeles, Los Alamos Scientific Laboratory, Purdue University, Washington University, Yale University, University of Toronto, University of Pennsylvania, University of Maryland, Ohio State University, University of Michigan, Massachusetts Institute of Technology, University of Cincinnati, Kyushu University, and Nagoya University

1980: Two special sessions of American Mathematical Society, Colorado, and Pennsylvania

1979: Departments of Mathematics, Osaka University, University of Osaka Prefecture, Kyoto University and Tokyo University, Japan