Talks

Ellen Gethner
Assistant Professor of Computer Science
University of Colorado at Denver
ellen dot gethner at cudenver dot edu

Back to Ellen Gethner's homepage
Last updated 15 March 2008

[Keynote | Invited | Contributed]

Talks: 1980-present

    Keynote

  1. Searching for a Thickness-Two 10-Chromatic Graph and Discovering Other Treasures Along The Way, SMath (Conference in Celebration of Smith College Alumnae Mathematicians II), Smith College, Northampton, MA, September, 2007.
  2. Unravelling the Chromatic Number of Thickness-Two Graphs, Discrete Math Day, Skidmore College, Saratoga Springs, NY, September, 2006.
  3. The Art of Computation: M.C. Escher in the 21st Century, Young Mathematicians Conference, Ohio State University, Columbus, Ohio, August, 2005.
  4. A Stroll Through the Gaussian Primes (pdf file), UNO High School Outreach, University of Nebraska/Omaha, February, 2001.
  5. What Does a Research Mathematician Do?, Bay Area Mathematics Project For High School Teachers, Albany, California, July, 1996.
  6. Prime Time, MSRI Junior High School Outreach Program, Mathematical Sciences Research Institute, Berkeley, California, June, 1996, Invited/Outreach.
  7. Prime Time, Numbers In Action, Mathematical Sciences Research Institute (MSRI), Berkeley, California, December, 1995.

    Invited

  8. An Adventurer's Guide to the Colorful Tale of Thickness-Two Graphs, MathFest Invited Paper Session on Graph Theory with Connections to Geometry and Topology, Madison, WI, July, 2008, Research
  9. An Adventurer's Guide To The Treasure Hunt For High Chromatic Thickness-Two Graphs, Mathematics Colloquium, Skidmore College, Saratoga Springs, NY, April, 2008, Research
  10. An Adventurer's Guide To The Treasure Hunt For High Chromatic Thickness-Two Graphs, Mathematics Colloquium, Willamette University, Salem, OR, February, 2008, Research
  11. The Rectilinear Crossing Number of the Complete Graph, guest lecturer in a Discrete Geometry class at Smith College, Northampton, MA, September, 2007, Research
  12. New Results on Thickness-Two Graphs, 20th Cumberland Conference, Emory University, Atlanta, GA, May 2007, Invited/Research.
  13. The Art of Computation: M.C. Escher in the 21st Century, Math and Computer Science Colloquium at Hamilton College, Clinton, New York, April, 2006, Invited/Research.
  14. Unravelling the Chromatic Number of Thickness-Two Graphs, SIAM Special Session on Geometric Representations of Graphs, San Antonio, January, 2006, Invited/Research/Organizer.
  15. The Art of Computation: M.C. Escher in the 21st Century, Math and Computer Science Colloquium at Colorado College, Colorado Springs, March, 2005, Invited/Research.
  16. Color Coded Escher Tilings: Theory and Practice, Math and Computer Science Colloquium at Skidmore College, Saratoga Springs, New York, February, 2005, Invited/Research.
  17. A Unit Bar-visibility Layout Algorithm for Outerplanar Near Triangulations, 35th Southeastern Conference on Graph Theory (Invited Special Session), Combinatorics, and Computing, Florida State University, March, 2004, Invited/Research.
  18. On Unit-Bar Visibility Graphs, AMS Joint Central and Western Section Meeting, Special Session on Graphs and Digraphs, October, 2003, Invited/Research.
  19. M.C. Escher Inspires a Coloring Problem of a Different Colour: Art, Computer Science and Mathematics Collide, Combinatorialists of New England, Smith College/Northampton, March, 2001, Invited/Research.
  20. M.C. Escher Inspires a Coloring Problem of a Different Colour: Art, Computer Science and Mathematics Collide, 32nd Southeastern Conference on Combinatorics, Graph Theory, and Computing, Louisiana State University/Baton Rouge, February, 2001, Contributed/Research
  21. M.C. Escher Inspires a Coloring Problem of a Different Colour: Art, Computer Science and Mathematics Collide, UNO Mathematics Colloquium, University of Nebraska/Omaha February, 2001, Invited/Research.
  22. A Panoply of Potentially Pleasing Patterns, UNO Mathematics/CS Seminar, University of Nebraska/ Omaha, February, 2001 Invited/ Research
  23. M.C. Escher Inspires a Coloring Problem of a Different Colour: Art, Computer Science and Mathematics Collide, Simon Fraser University, Centre for Experimental and Constructive Mathematics (CECM), January, 2001, Invited/Research.
  24. A Panoply of Potentially Pleasing Patterns, SCU Mathematics Colloquium, Santa Clara University, Santa Clara, California, October, 2000, Invited/Research.
  25. A Panoply of Potentially Pleasing Patterns, SFSU Mathematics Colloquium, San Francisco State University, San Francisco, California, April, 1999, Invited/Research.
  26. A Panoply of Potentially Pleasing Patterns, Claremont Colleges Mathematics Colloquium, Claremont Colleges, Claremont, California, March, 1999, Invited/Research.
  27. Periodic Gaussian Moats, Cal State Bakersfield Mathematics Colloquium, Cal State Bakersfield, Bakersfield, California, March, 1998, Invited/Research.
  28. Periodic Gaussian Moats, Franklin and Marshall College Mathematics Colloquium, Franklin and Marshall College, Lancaster, Pennsylvania, March, 1998, Invited/Research.
  29. 1001 Hikes on the Gaussian Primes, SCU Mathematics Colloquium, Santa Clara University, Santa Clara, California, February, 1998, Invited/Research.
  30. 1001 Hikes on the Gaussian Primes, Regional Meeting of the AMS and MAA, Claremont Colleges, Claremont, California, October, 1997, Contributed/Research.
  31. 1001 Hikes on the Gaussian Primes, Conference in Celebration of Women in Number Theory and Analysis, UC Berkeley and MSRI, August, 1996, Invited/Research.
  32. 1001 Hikes on the Gaussian Primes, UCSD Colloquium, UC San Diego, La Jolla, California, February, 1996, Invited/Research.
  33. 1001 Hikes on the Gaussian Primes, University of San Diego Combinatorics/Number Theory Brown Bag Seminar, University of San Diego, San Diego, California, February, 1996, Invited/Research.
  34. A Stroll Through the Gaussian Primes, Noetherian Ring, UC Berkeley, Berkeley, California, October, 1995,Invited/Research.
  35. A Stroll Through the Gaussian Primes, UCSB Number Theory Seminar, UC Santa Barbara, Santa Barbara, California, October, 1995, Invited/Research.
  36. Latest Results on the Gaussian Moat Problem, Conference on Analytic Number Theory, University of Illinois, Allerton Park Conference Center, May, 1995, Invited/Research.
  37. Searching for the Great Gaussian Gap, Oregon State University Mathematics Colloquium, Corvallis, Oregon, April, 1995, Invited/Research
  38. Exact Location of Zeros of Rational Period Functions, AWM Workshop, Joint Meetings, Cincinnati, Ohio, January, 1994, Invited/Research.
  39. Rational Period Functions, Zeros, Bryn Mawr/Haverford Mathematics Colloquium, Bryn Mawr, Pennsylvania, October, 1993, Invited/Research.
  40. Rational Period Functions, Hecke Operators and Zeros, Temple University Number Theory and Combinatorics Seminar, Temple University, Philadelphia, Pennsylvania, February, 1993, Invited/Research.
  41. Rational Period Functions, New Directions, AMS Special session on Modular Forms and Related Topics, San Antonio, Texas, January, 1993, Invited/Research.
  42. Rational Period Functions, Hecke Operators, Conference in Celebration of Joseph Lehner's 80th Birthday, Swarthmore College, Swarthmore, Pennsylvania, October, 1992, Invited/Research.
  43. Rational Period Functions II, OSU Complex Analysis Seminar, Ohio State University, Columbus, Ohio, April, 1992, Contributed/Research.
  44. Rational Period Functions I, OSU Complex Analysis Seminar, Ohio State University, Columbus, Ohio, April, 1992, Contributed/Research.
  45. Rational Period Functions, Hecke Operators, AMS Special Session: Modular Forms, Arithmetic Algebraic Geometry, Temple University, Philadelphia, Pennsylvania, April, 1991, Invited/Research.
  46. Rational Period Functions, Hecke Operators, AWM Workshop, Joint Meetings San Francisco, California, January, 1990, Invited/Research.
  47. Cyclic Quadrilaterals, Summer Program for High School Students, Hampshire College, Hampshire, Massachusetts, July, 1980, Invited/Outreach.

    Contributed

  48. Unravelling the Chromatic Number of Thickness-Two Graphs, Discrete Mathematics Seminar, CU Denver, September, 2006, Contributed/Research.
  49. Unit Bar-visibility Layouts of Triangulated Polygons, CU Denver Computer Science PhD Seminar, October, 2004, Contributed/Research.
  50. Unit Bar-visibility Layouts of Triangulated Polygons, 12th International Symposium on Graph Drawing, City University of New York, September, 2004, Contributed/Research.
  51. How False is Kempe's Proof of the Four Color Theorem?, 34th Southeastern Conference on Graph Theory, Combinatorics, and Computing, Florida State University, March, 2003, Contributed/Research
  52. Computational Aspects of Escher Tilings, Discrete Mathematics Seminar, University of Colorado at Denver, September, 2002, Contributed/Research.
  53. On Rotation Systems, UBC Theory Reading Group, University of British Columbia/Vancouver, May, 2002, Contributed/Expository.
  54. On Representations of Some Thickness-Two Graphs, UBC Theory Reading Group, University of British Columbia/Vancouver, May, 2002, Contributed/Expository.
  55. Toward the Chromatic Number of an Escher Tile, 33rd Southeastern Conference on Graph Theory, Combinatorics, and Computing, Florida State University, March, 2002, Contributed/Research.
  56. Coloring Ordinary Maps, Maps of Empires, and Maps of the Moon, UBC Theory Reading Group, University of British Columbia/Vancouver, November, 2001, Contributed/Expository.
  57. M.C. Escher Inspires a Coloring Problem of a Different Colour: Art, Computer Science and Mathematics Collide, CS Theory Seminar, University of British Columbia/Vancouver, February, 2001, Contributed/Research.
  58. M.C. Escher: Computational Geometer Extraordinaire, Recent Trends in Geometry and Symmetry, University of Wisconsin, Madison, Wisconsin, May, 2000, Contributed/Research.
  59. Gaussian Moat Problem: A New Approach?, UBC Theoretical Computer Science Seminar, University of British Columbia, Vancouver, B.C. Canada, Nov, 1999, Contributed/Research.
  60. A Combinatorial Problem of M.C. Escher, Conference in Honor of Paul Erdos, Hungarian Academy of Sciences, Budapest, Hungary, July, 1999, Poster: Contributed/Research.
  61. Mathematica Workshop for Faculty III, Claremont McKenna College, May, 1999, Contributed/Outreach.
  62. Mathematica Workshop for Faculty II, Claremont McKenna College, April, 1999, Contributed/Outreach.
  63. Mathematica Workshop for Faculty I, Claremont McKenna College, April, 1999, Contributed/Outreach.
  64. Rectangle Visibility Graphs: On a Paper of Hutchinson, Shermer, and Vince, Claremont Colleges Combinatorics and Algebra Seminar Pomona College, Claremont, California, May, 1999, Contributed/ Research.
  65. The Mathematics of English Change Ringing, Pomona College "Mathematics of Music" Class Pomona College, Claremont, California, May, 1999, Contributed/Outreach.
  66. On the Number of Inequivalent Escher-like Tiles in Four Aspects, Claremont Colleges Combinatorics and Algebra Seminar, Pomona College, Claremont, California November, 1998, Contributed/Research.
  67. The Bridge Between Modular Forms and Fermat's Last Theorem: Part 5, Grinnell Math Faculty Seminar Grinnell College, Grinnell, Iowa April, 1996, Contributed/ Expository.
  68. The Bridge Between Modular Forms and Fermat's Last Theorem: Part 4, Grinnell Math Faculty Seminar Grinnell College, Grinnell, Iowa April, 1996, Contributed/ Expository.
  69. The Bridge Between Modular Forms and Fermat's Last Theorem: Part 3, Grinnell Math Faculty Seminar Grinnell College, Grinnell, Iowa April, 1996, Contributed/ Expository.
  70. The Bridge Between Modular Forms and Fermat's Last Theorem: Part 2, Grinnell Math Faculty Seminar Grinnell College, Grinnell, Iowa April, 1996, Contributed/ Expository.
  71. The Bridge Between Modular Forms and Fermat's Last Theorem: Part 1, Grinnell Math Faculty Seminar Grinnell College, Grinnell, Iowa April, 1996, Contributed/ Expository.
  72. A Stroll Through the Gaussian Primes, West Coast Number Theory Conference, Asilomar Conference Center, Pacific Grove, California, December, 1995, Contributed/Research.
  73. Still Searching for the Great Gaussian Gap, MSRI Postdoctoral Seminar, Mathematical Sciences Research Institute, Berkeley, California, April, 1995, Contributed/Research.
  74. On a Paper of Heiko Harborth, University of Washington Combinatorics and Geometry Seminar, University of Washington, Seattle, Washington, February, 1982, Contributed/Research.
  75. Platonic Graphs on the Torus, University of Washington Combinatorics and Geometry Seminar, University of Washington, Seattle, Washington, October, 1981 Contributed/Research.
Last updated 15 March 2008