Welcome to Wasin So's Presentation
Page
Past Presentations (until
2001)
 ``Singular values of matrix exponentials'',
Fourth SIAM Conference on Linear Algebra in Signals, Systems and Control, Boston MA, August 1315, 2001.
 ''A tale of solving polynomials in two algebras'',
SJSU Colloquium, San Jose CA, March 1, 2001.
 ''Quadratic formulas for quaternions'',
AMSMAA Joint National Meeting, New Orleans LA, January 1013, 2000.
 ``Extendible elements of the alternating group'',
AMSMAA Joint National Meeting, Washington DC, January 1922, 2000.
 ``Product of exponentials: results and conjectures'',
Invited talk at the 8th ILAS Conference, Barcelona, Spain, July 1999.
 ``Exponential formulas and spectral indices'',
Workshop on geometric and combinatorial methods in the Hermitian spectral sum problem , Coimbra, Portugal, July 1999.
 ``Existence of quaternionic eigenvalues'',
Institute of Mathematics and Software, Xiangtan Polytechnic University, Hunan, China, May 1999.
 ``Computation of quaternionic eigenvalues'',
Institute of Mathematics and Software, Xiangtan Polytechnic University, Hunan, China, May 1999.
 ``Quaternions: origin, properties, applications and generalization'',
Institute of Mathematics and Software, Xiangtan Polytechnic University, Hunan, China, June 1999.
 ``Singualr values of matrix exponentials'',
Institute of Computational and Applied Mathematics. Xiangtan University, Hunan, China, June 1999.
 ``Convexity of quaternionic numerical range '',
Institute of Mathematics and Software, Xiangtan Polytechnic University, Hunan, China, June 1999.
 ``Computation of upper bild'',
Institute of Mathematics and Software, Xiangtan Polytechnic University, Hunan, China, June 1999.
 ``Linear operators preserving minimal ranks'',
Invited talk at the Linear Preserver Problems Conference, Lisbon, Portugal, January 1999.
 ``Minimial rank and its linear preservers'',
Invited talk at the Matrix Theory Conference, Hong Kong, December 1998.
 ``Rank one perturbation and Laplacian Spectrum'',
Southern California Matrix Conference, San Jose, CA, November 1998.
 ``Fundamental similarity of matrix symbols'',
SIAM Annual Meeting, Toronto, Canada, July 1998.
 ``Linear operators preserving reduced ranks''
7th ILAS Conference, Madison, WI, June 1998.
 ``Different parts of the quaternionic numerical range'',
3rd Numerical ranges and radii workshop, Madison, WI, June, 1998.
 ``On preserving structured matrices using double bracket operator'',
SIAM Annual Meeting, Stanford CA, July 1997.
 ``An explicit criterion for the convexity of quaternionic numerical range'',
AMSMAA Joint National Meeting, San Diego, January 1997.
 ``Different parts of the quaternionic numerical range'',
University of Hong Kong, Hong Kong, June, 1996.
 ``Support properties of multiscaling function'',
Invited talk at the International Conference on Harmonic Analysis and Wavelet Analysis,
Beijing, China, June 1996.
 ``Eigenvalues of sums of Hermitian matrices'',
National Changhua University of Education, Changhua, Taiwan, May 1996.
 ``Difference of two similarity classes'',
Tamkang University, Tamsui, Taiwan, May 1996.
 ``Estimating the support of a scaling vector'',
SIAM Annual Meeting, Charlotte, NC, October 1995.
 ``Standard inequalities for the sum and product of Hermitian matrices'',
5th ILAS Conference, Atlanta, GA, August 1995.
 ``Isometric isomorphisms between normed spaces",
University of Texas, Austin, TX, March 1995.
 ``Possible numbers of invariant polynomials for the difference of two similarity classes",
Invited talk at the Workshop on Recent Advance of Linear Algebra, Lisbon, Portugal, January 1995.
 ``Isometries of l_pnorms",
AMSMAA Joint National Meeting, San Francisco, CAJanuary 1995.
 ``Preserving singular values and displacement rank",
First Southeastern Linear Algebra Conference, Chattanooga, TN, May 1994.
 ``On the diagonal elements and eigenvalues of a Hermitian matrix  a historical account",
University of Lisbon, Portugal, December 1993.
 ``Isometric isomorphisms between some finite dimensional normed spaces",
University of Lisbon, Portugal, November 1993.
 ``Weyl's inequalities and its applications'',
University of Coimbra, Portugal, August 1993.
 ``Equivalence of spectral inequalities for sum and product'',
University of Lisbon, Portugal, June 1993.
 ``Spectral problem: multiplicative version'',
University of Lisbon, Portugal, June 1993.
 ``Characterization of an eigenvalue of a product of positive definite Hermitian matrices'',
University of Lisbon, Portugal, May 1993.
 ``On the converse of a theorem'',
3rd ILAS Conference, Pensacola, FL, March 1993.
 ``Eigenvalues for sum of Hermitian matrices'',
Institute for Mathematics and its Applications, Minneapolis, MN, March 1992.
 ``Eigenvalues inequalities of matrix exponentials'',
Invited talk at the California State University, Hayward, February 1992.
 ``Spectral inequalities and matrix exponentials'',
San Jose State University, San Jose, February 1992.
 ``Eigenvalues inequalities of matrix exponentials'',
National University of Singapore, Singapore, February 1992.
 ``Trace inequalities of matrix exponentials'',
Institute for Mathematics and its Applications, Minneapolis, MN, November 1991.
 ``Numerical range of matrices with quaternionic entries'',
College of William and Mary, Williamsburg, VA, November 1991.
 ``Equality cases of matrix exponential inequalities'',
AMSMAA Joint National Meeting, San Francisco, CA, January 1991.
 ``Equality case of Bernstein inequality'',
Southern California Matrix Conference, Santa Barbara, CA, November 1990.
 ``Exponential Map'',
Southern California Matrix Conference, Santa Barbara, CA, November 1988.
