• Presented “Exponentially Harmonic Maps between Surfaces” at the Joint International Meeting of American Math Society and Vietnam Math Society in  Quy Nhon, Vietnam, mid June, 2019.
  • Presented “Exponentially Harmonic Maps between Finsler Manifolds” at the International Congress of Mathematicians 2018 in Rio de Janeiro, Brazil, August, 2018.
  • Presented “Harmonic Maps and Biharmonic Maps” at a Colloquium of School of Mathematics, Northwest University, Xi’an, China, late May 2018.
  • Presented “Leaf-wise Harmonic Maps of Manifolds with 2-dimensional Foliations” at the 2nd Mathematical Congress of the Americas in Montreal, Canada, late July, 2017.
  • Presented “Exponentially Harmonic Maps, Exponential Stress Energy and Stability” at the 7th International Congress of Chinese Mathematicians in Beijing, China, August 2016.
  • Presented “Exponentially Harmonic Maps and Their Properties” at International Conference on Evolution Equations in Vanderbilt University, May 2016.
  • Presented “Some Properties of f-biharmonic Maps” at International Congress of Mathematical Physics (every 3 years) at Santiago de Chile, 7/27-8/2, 2015.
  • Presented “Paying Tribute to James Eells and Joseph H. Sampson and Their Pioneering Work on Harmonic Maps” at the 3rd Exchange of Mathematical Ideas Conference, June, 2015.
  • Presented “Some Properties of Transversally f-biharmonic Maps” at Lehigh University Geometry and Topology Conference, May 2015.
  • Presented “Exponentially Harmonic Maps” at the International Congress of Mathematicians (held every 4 years) in Seoul, South Korea, August 2014.
  • Presented “Harmonic Maps and Biharmonic Maps of Manifolds” at a Mathematics Department colloquium, National Taiwan Normal University,  Taipei, July, 2013.
  • Presented “Developmetnts of Harmonic Maps into Biharmonic Maps” at the 2nd Pacific Rim Mathematical Association Congress (every 4 years) in Shanghai, China, June, 2013.
  • Presented “f-biharmonic maps between Riemannian manifolds” at the 14th International Conference on Geometry, Integrability and Quantization organized  by Bulgarian Academy of Sciences in Varna, June 2012.
  • Presented “Biwave maps, stability and conservation law” at the 5th International Conference on Mathematics and Statistics in Athens, Greece, June 2011.
  • Presented “Some properties of biwave maps” at 2010 International Congress of Mathematicians in Hyderabad, India, August 19-27.
  • Presented “Harmonic maps and biharmonic maps” at a  Department of Mathematical Sciences colloquium, George Mason University, March 2010.
  • Presented “Transversal biwave maps” at Geometry and Topology Conference, Lehigh University in Pennsylvania, June 2009.
  • Presented “Biwave maps into manifolds” at the 9th Pacific Geometry Conference at National Taiwan University in Taipei, Taiwan, December 2008.
  • Presented “Transversal wave maps from Minkowski spaces into foliated manifolds” at  the 9th Conference on Geometry and Topology in Krakow, Poland, July, 2008.
  • Presented “Developments of Harmonic maps and wave maps” at a colloquium of Department of Mathematics and Statistics, American University, March 2008.
  • Presented “Transversal wave maps and Examples” at a colloquium of Department of Mathematics, National Taiwan Normal University, June 2007.
  • Presented “Transversally biharmonic maps and examples” at the Department of Mathematics, University of Kentucky, Lexington, March 2007.
  • Presented “Transversally biharmonic maps between foliated riemannian manifolds” at 2006 International Congress of Mathematicians in Madrid, Spain, in August.
  • Presented “Exponential wave maps” at the 3rd Pacific Conference on Mathematics at Fudan University in Shanghai, China, August 2005.
  • Presented “Harmonic maps and biharmonic maps between various spaces” at the Institute of Mathematics for Advanced Study at Zhejiang University,  Zhejiang Province, China, August, 2003.
  • Presented “Biharmonic maps on Riemannian foliation” at the First International Mathematical Joint Meeting between American Mathematical Scociety and Italian Mathematical Union, University of Pisa,  Italy, July 2002.
  • Presented “Harmonic maps of singular spaces” at the Department of Mathematics, Univeristy of North Carolina-Chapel Hill, September 2001.
  • Presented “Biharmonic maps of V-manifolds” at the First International Mathematical Joint Meeting between French Mathematical Society and American Mathematical Society, Lyon, France, July, 2001.
  • Presented “Harmonic maps between manifolds” at a coloqium of Department of Mathematics, Natinal Taiwan Normal University, June, 1995.
  • Presented “Harmonic maps on spaces with conical singularities” at Geometry and Topology Conference at Lehigh University, May 1992.
  • Presented “Spectral geometry of V-manifolds and its applications to harmonic maps” at the AMS Summer Institute on Diferential Geometry at UCLA, Summer 1990.
  • Presented “Harmonic maps of V-manifolds” at Mary Washington College, 1989.



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