Invited talks

- Critical points of Total scalar curvature, Mini workshop on Differential Geometry, HUFS, Aug. 2011.

- Critical points of Total Scalar curvature, Inha University, Apr. 2011.

- Critical points of the scalar curvature, Ewha Womans University, Aug. 2009.

- Critical points of the total scalar curvature functional, Univ. of California, Santa Barbara, Jan. 2008.

- Rigidity of the Critical point equation, NIMS International Workshop on Riemannian Geometry and Related Areas, June 2007.

- On the Critical point equation, Differential Geometry Workshop, KIAS, Dec. 2005.

- The critical point equation on a compact manifold, Korea-Japan Joint Workshop, KIAS, Nov. 2004.

- Extrema of the scalar curvature functional on the space of metrics, Sogang University, May 2003.

- A note on Critical point equations, Daewoo Workshop in Pure Mathematics, Honam University, July 2002.

- A note on Einstein metrics, Daewoo Workshop in Pure Mathematics, POSTECH, July 1999.

- Critical points of Scalar Curvature Functionals, Geometry and Topology Seminar, KIAS, June 1999.

- Ricci Flat metrics, Geometry and Topology Seminar, Univ. of California, Berkeley, Jan. 1998.