- Householder Symposium, Selva di Fasano, Italy, June 12–17, 2022

- International Conference on Matrix Analysis and Applications, University of Nevada, Reno, NV, July 15–18, 2019
- Courant Institute of Mathematical Sciences, New York University, New York, NY, May 5–7, 2019
- Center for Computational Engineering, Massachusetts Institute of Technology, Cambridge, MA, April 24–26, 2019
- Department of Mathematics, Georgia Institute of Technology, Atlanta, April 13–14, 2019
- Institute for Pure and Applied Mathematics, University of California, Los Angeles, CA, April 3–5, 2019
- Max Planck Institute for Mathematics in the Sciences, Leipzig, Germany, April 1–3, 2019

- Triangle Lectures in Combinatorics, Chapel Hill, NC, November 10, 2018
- National Science Foundation, Arlington, VA, October 31–November 3, 2018
- Simons Institute, University of California, Berkeley, CA, September 24–28, 2018
- International Conference of Numerical Analysis and Applied Mathematics, Rhodes, Greece, September 13–18, 2018
- Department of Mathematics, National University of Singapore, Singapore, August 9–22, 2018
- Erwin Schrödinger International Institute for Mathematics and Physics, Vienna, Austria, June 11–15, 2018
- Mathematical Research Institute of Oberwolfach, Oberwolfach-Walke, Germany, April 22–28, 2018
- GAGS: The Georgia Algebraic Geometry Symposium, Atlanta, GA, February 23–25, 2018

- Department of Mathematics, Vanderbilt University, Nashville, TN, October 25–27, 2017
- Department of Mathematics, National University of Singapore, Singapore, September 20–25, 2017
- Defense Advanced Research Projects Agency, Arlington, VA, August 30, 2017
- Foundations of Computational Mathematics Conference, Barcelona, Spain, July 10–19, 2017
- SIAM Annual Meeting, Pittsburgh, PA, July 10–14, 2017
- International Conference on Engineering and Computational Mathematics, Hong Kong, May 31–June 2, 2017
- SIAM Conference on Optimization, Vancouver, BC, May 22, 2017
- Defense Advanced Research Projects Agency, Arlington, VA, May 17, 2017
- Department of Mathematics, University of Utah, Salt Lake City, UT, April 20, 2017
- Department of Statistics, University of Wisconsin, Madison, WI, April 12, 2017
- National Science Foundation, Arlington, VA, April 3–5, 2017
- International Conference on Mathematics of Data Science, Hong Kong, March 20–24, 2017
- School of Mathematics, Georgia Institute of Technology, Atlanta, GA, March 2–3, 2017
- Department of Mathematics, University of California, Berkeley, CA, January 17–19, 2017

- NIPS Workshop on Learning with Tensors, Barcelona, Spain, December 10, 2016
- Department of Mathematics, Simon Fraser University, Vancouver, BC, December 2, 2016
- AMS Fall Southeastern Sectional Meeting, Raleigh, NC, November 12–13, 2016
- Defense Advanced Research Projects Agency, Arlington, VA, October 18, 2016
- Department of Mathematics, Purdue University, West Lafayette, IN, September 22, 2016
- IEEE Information Theory Workshop, Cambridge, UK, September 11–14, 2016
- ILAS Conference, Leuven, Belgium, July 11–15, 2016
- NSF–CBMS Regional Research Conference, Austin, TX, May 31–June 4, 2016
- School of Mathematical Sciences, Fudan University, Shanghai, China, May 20–24, 2016
- Chern Institute of Mathematics, Tianjin, China, May 20–24, 2016
- Department of Mathematics and Department of Statistics, University of California, Davis, CA, April 28, 2016
- Department of Mathematics, University of Texas, Austin, TX, April 21, 2016
- Department of Mathematics, University of California, San Diego, CA, March 3, 2016
- Hausdorff Center for Mathematics, Bonn, Germany, February 15–19, 2016
- Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, MN, January 25–29, 2016
- Workshop on Tensor Decompositions and Applications, Leuven, Belgium, January 18–22, 2016

- Conference of the International Association for Statistical Computing–Asia Regional Section, Singapore, December 17–19, 2015
- Simons Institute, University of California, Berkeley, CA, December 14–16, 2015
- Defense Advanced Research Projects Agency, Arlington, VA, October 29–November 2, 2015
- International Centre for Mathematics and Computer Science, Toulouse, France, October 6–7, 2015
- Leibniz Center for Informatics, Dagstuhl, Germany, August 30–September 4, 2015
- Institute for Mathematical Sciences, Singapore, August 20–21, 2015
- International Congress on Industrial and Applied Mathematics, Beijing, China, August 10–14, 2015
- Banff International Research Station, Banff, AB, July 24–26, 2015
- Hausdorff Center for Mathematics, Bonn, Germany, June 8–12, 2015
- Department of Mathematics, Duke University, Durham, NC, April 13, 2015
- Department of Mathematics, Stanford University, Stanford, CA, March 11, 2015
- Winter School on Search for Latent Variables: ICA, Tensors, and NMF, Grenoble, France, February 2–4, 2015
- Basic Research Innovation and Collaboration Center, Arlington, VA, January 26–30, 2015

- Foundations of Computational Mathematics Conference, Montevideo, Uruguay, December 18–20, 2014
- Structured Matrices and Tensors: Analysis, Algorithms and Applications, National Taiwan University, Taipei, Taiwan, December 8–11, 2014
- Simons Institute, University of California, Berkeley, CA, August 21–December 19, 2014
- Workshop on Mathematical Issues in Information Sciences, Xi'an, China, July 5–10, 2014
- Department of Mathematics, Tsinghua University, Beijing, China, June 19, 2014
- School of Mathematical Sciences, Peking University, Beijing, China, June 14–22, 2014
- Institute for Computational and Experimental Research in Mathematics, Brown University, Providence, RI, June 4–6, 2014
- SIAM Conference on Optimization, San Diego, CA, May 21–23, 2014
- SIAM Conference on Imaging Science, Hong Kong, May 12–14, 2014
- Department of Mathematics, University of Wisconsin, Madison, WI, May 2, 2014
- Department of Mathematics, University of Illinois, Urbana-Champaign, IL, April 24, 2014
- Department of Statistics, Pennsylvania State University, University Park, PA, April 16–18, 2014
- Department of Mathematics and Statistics, McMaster University, Hamilton, ON, April 4, 2014
- Department of Computer Science, Katholieke Universiteit Leuven, Belgium, March 22–25, 2014
- Initiative for Mathematical Sciences and Engineering, University of Illinois, Urbana-Champaign, IL, February 24–25, 2014
- Statistical and Applied Mathematical Sciences Institute, Research Triangle Park, NC, February 3–7, 2014
- Department of Computational and Applied Mathematics, Rice University, Houston, TX, January 26–28, 2014
- Joint Mathematics Meetings, Baltimore, MD, January 13–14, 2014

- International Conference on Engineering and Computational Mathematics, Hong Kong, December 16–18, 2013
- Taida Institute of Mathematical Sciences, National Taiwan University, Taipei, Taiwan, December 3–7, 2013
- Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, MN, October 28–November 1, 2013
- Department of Mathematics, University of Alabama, Birmingham, AL, September 26–28, 2013
- ENUMATH Conference, École Polytechnique Fédérale de Lausanne, Switzerland, August 26–30, 2013
- SIAM Conference on Applied Algebraic Geometry, Fort Collins, CO, August 1–4, 2013
- International Conference on Continuous Optimization, Lisbon, Portugal, July 27–August 1, 2013
- Centro de Estruturas Lineares e Combinatórias, University of Lisbon, Lisbon, Portugal, July 22–26, 2013
- Abdus Salam International Centre for Theoretical Physics, Trieste, Italy, July 1–12, 2013
- School of Mathematical Sciences, Peking University, Beijing, China, June 18–21, 2013
- ILAS Conference, Providence, RI, June 3–7, 2013
- AMS Spring Central Sectional Meeting, Ames, IA, April 27–28, 2013
- Department of Mathematics, Purdue University, West Lafayette, IN, April 4–6, 2013
- Department of Statistics, Duke University, Durham, NC, March 11–12, 2013
- Leibniz Center for Informatics, Dagstuhl, Germany, February 17–22, 2013

- Taida Institute for Mathematical Sciences, National Taiwan University, Taipei, Taiwan, December 30, 2012–January 4, 2013
- Department of Mathematics, Chinese University of Hong Kong, Hong Kong, December 23–30, 2012
- Institute for Mathematical Sciences, National University of Singapore, Singapore, November 19–23 and December 17–21, 2012
- Department of Mathematics, University of Wisconsin, Madison, WI, October 11–13, 2012
- Initiative for Mathematical Sciences and Engineering, University of Illinois, Urbana-Champaign, IL, September 17–18, 2012
- Department of Computer Science, Katholieke Universiteit Leuven, Belgium, September 10–14, 2012
- International Symposium of Mathematical Programming, Berlin, Germany, August 19–24, 2012
- Joint Statistical Meetings, San Diego, CA, July 28–August 2, 2012
- SIAM Annual Meeting, Minneapolis, MN, July 9–13, 2012
- Mathematical Research Institute of Oberwolfach, Oberwolfach-Walke, Germany, June 24–30, 2012
- SIAM Conference on Applied Linear Algebra, Valencia, Spain, June 18–22, 2012
- Conference on Statistical Learning and Data Mining, Ann Arbor, MI, June 5–7, 2012
- Chern Institute of Mathematics, Nankai University, Tianjin, China, May 29–June 1, 2012
- Department of Mathematics, University of California, San Diego, CA, May 21–23, 2012
- Department of Mathematics, University of Minnesota, Minneapolis, MN, May 8, 2012
- Department of Statistics, Texas A&M University, College Station, TX, April 24–26, 2012
- Department of Mathematics, University of Pennsylvania, Philadelphia, PA, April 3–5, 2012
- Program in Applied and Computational Mathematics, Princeton University, Princeton, NJ, April 1–3, 2012
- Department of Industrial Engineering and Operations Research, University of California, Berkeley, CA, March 18–20, 2012
- Department of Mathematics, University of California, Berkeley, CA, March 17, 2012
- Department of Mathematics, Pennsylvania State University, State College, PA, March 13–15, 2012
- Department of Mathematics, North Carolina State University, Raleigh, NC, February 28–March 1, 2012
- Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, MN, February 1–June 30, 2012
- Joint Mathematics Meetings, Boston, MA, January 4–7, 2012

- Leibniz Center for Informatics, Dagstuhl, Germany, December 11–16, 2011
- Department of Mathematics, University of Wisconsin, Madison, WI, October 21–23, 2011
- SIAM Conference on Applied Algebraic Geometry, Raleigh, NC, October 6–9, 2011
- Hausdorff Research Institute for Mathematics, Bonn, Germany, August 1–5, 2011
- Leibniz Center for Informatics, Dagstuhl, Germany, July 17–22, 2011
- International Congress on Industrial and Applied Mathematics, Vancouver, BC, Canada, July 18–22, 2011
- Householder Symposium, Tahoe City, CA, June 12–17, 2011
- International Conference on Computational Harmonic Analysis, Hong Kong, May 23–27, 2011
- SIAM Conference on Optimization, Darmstadt, Germany, May 16–19, 2011
- Department of Statistics, University of California, Berkeley, CA, April 22, 2011
- Department of Mathematics, Duke University, Durham, NC, March 20–22, 2011
- National Science Foundation, Arlington, VA, March 14–16, 2011

- Department of Mathematics, Chinese University of Hong Kong, Hong Kong, December 20, 2010–January 26, 2011
- Workshop on Eigenvalues of Nonnegative Tensors, Hong Kong, December 18, 2010
- NIPS Workshop on Tensors, Kernels, and Machine Learning, Whistler, BC, Canada, December 10–11, 2010
- Department of Mathematics, Texas A&M University, College Station, TX, December 1–4, 2010
- Department of Mathematics, University of California, Berkeley, CA, November 23–29, 2010
- Institute for Pure and Applied Mathematics, University of California, Los Angeles, CA, September 28–October 1, 2010
- American Institute of Mathematics, Palo Alto, CA, August, 16–20, 2010
- SIAM Annual Meeting, Pittsburgh, PA, July 12–16, 2010
- ILAS Conference, Pisa, Italy, June 21–25, 2010
- SIAM Conference on Imaging Science, Chicago, IL, April 12–14, 2010
- American Institute of Mathematics, Palo Alto, CA, March 29–April 2, 2010
- National Science Foundation, Arlington, VA, March 10–12, 2010
- School of Mathematics, University of Minnesota, Minneapolis, MN, February 17–19, 2010
- School of Mathematics, Georgia Institute of Technology, Atlanta, GA, February 14–17, 2010
- Department of Applied and Computational Mathematics, California Institute of Technology, Pasadena, CA, February 7–10, 2010
- Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA, February 3–5, 2010
- Department of Mathematics, University of Michigan, Ann Arbor, MI, January 31–February 2, 2010
- Department of Statistics, University of Chicago, Chicago, IL, January 19–21, 2010
- Joint Mathematics Meetings, San Francisco, CA, January 13–16, 2010

- National Center for Theoretical Sciences, National Taiwan University, Taipei, Taiwan, December 20, 2009–January 3, 2010
- NIPS Workshop on Advances in Ranking, Whistler, BC, Canada, December 11–12, 2009
- SIAM Conference on Applied Linear Algebra, Monterey, CA, October 26–29, 2009
- American Institute of Mathematics, Palo Alto, CA, September 21–25, 2009
- International Symposium of Mathematical Programming, Chicago, IL, August 23–28, 2009
- Challenges in Modern Massive Data Sets, Copenhagen, Denmark, July 1–4, 2009
- OCCAM Launch Event, Oxford University, Oxford, June 29–July 1, 2009
- Department of Energy, Washington, DC, June 23–25, 2009
- Faculty of Life Sciences, University of Copenhagen, Copenhagen, Denmark, May 26–August 22, 2009
- Department of Mathematics, Stanford University, Stanford, CA, March 6, 2009
- National Science Foundation, Arlington, VA, February 20–21, 2009
- Department of Mathematics, University of California, Davis, CA, January 29, 2009
- Institute for Computational Mathematics, Hong Kong Baptist University, Hong Kong, January 5–7, 2009

- Computational Polynomial Optimization and Multilinear Algebra, Hong Kong, December 22–23, 2008
- Mathematical Sciences Research Institute, Berkeley, CA, December 15–18, 2008
- Computational Algebraic Statistics, Theories and Applications, Kyoto, Japan, December 10–11, 2008
- NIPS Workshop on Algebraic and Combinatorial Methods in Machine Learning, Vancouver/Whistler, BC, Canada, December 11–12, 2008
- Institute for Mathematics and its Applications, University of Minnesota, Minneapolis, MN, October 27–30, 2008
- Mathematical Sciences Research Institute, Berkeley, CA, July 7–18, 2008
- SIAM Annual Meeting, San Diego, CA, July 7–11, 2008
- Workshop on Algorithms for Modern Massive Datasets, Stanford, CA, June 25–28, 2008
- Department of Mathematics, San Jose State University, San Jose, CA, April 23, 2008
- Symposium on Gene Golub's Legacy: Matrix Computations — Foundation and Future, Stanford, CA, March 1, 2008

Q: What is the difference between a part-time professor and
a full-time professor?

A: A part-time professor is away part of the time while a
full-time professor is away all of the time.

Des MacHale, *Comic Sections*, Boole Press, Dublin, 1993.

**Contact:** Comments on these pages are welcome. Please write to
lekheng@galton.uchicago.edu.