Recent (and Upcoming) Talks and Presentations

Copies of the transparencies for most of my talks are available. Those not downloadable here can be requested by e-mail at rojas@math.tamu.edu .

• ``On the Complexity of Diophantine Geometry in Low Dimensions,'' May, 1999, 31st ACM Symposium on Theory of Computing (STOC '99), Atlanta, Georgia.
• ``Solving Real Fewnomials in Logarithmic Time,'' December 20, 1998, HKUST-DIMACS Workshop on Combinatorics and Algorithms, Hong Kong University of Science and Technology.
• ``Hilbert's Tenth Problem and the Genus Zero Locus,'' December 2, 1998, Departmental Colloqium, Mathematics Department, University of Hong Kong.
• ``Intrinsic, Near Quadratic Complexity Bounds for Multivariate Root Counting,'' August 25, 1998, Sixth Annual European Symposium on Algorithms (ESA '98), Venice, Italy.
• ``Diophantine Sentences and the Geometry of Elimination,'' April 4, 1998, Special Session on Sparse Elimination Methods in Polynomial System Solving, Spring Eastern Meeting of the American Mathematical Society, Temple University, Philadelphia, Pennsylviania.
• ``Effective Algebraic Geometry,'' March, 1998, Annual Meeting of the Hong Kong Mathematical Society, Hong Kong Polytechnic University, Hong Kong.
• ``Linear Algebra for Large Nonlinear Algebra over the Reals,'' Common Interest Session, Sixth SIAM Conference on Applied Linear Algebra, Snowbird, Utah, October 29 - November 1, 1997.
• Toric Generalized Characteristic Polynomials, February 21 (16:00), 1997, Algebraic Geometry Seminar, MIT.
• ``New Polyhedral Formulae for Affine Problems,'' February 14 (16:15), 1997, Combinatorics Seminar, MIT.
• ``Toric Projections and Hilbert's Tenth Problem,'' January 9 (14:00), 1997, Homotopy Methods and Real Machines Minisymposium, Foundations of Computational Mathematics, IMPA, Brasil.
• ``Counting Solutions of Sparse Polynomial Equations via Resultants,'' November 20th, Combinatorics Seminar, Northeastern University.
• ``Multisymmetric Functions via Toric Resultants,'' October 25th (16:15), 1996, Combinatorics Seminar, MIT.
• ``Toric Laminations and Sparse Generalized Characteristic Polynomials,'' October 11th, Valley Geometry Seminar, University of Massachusetts at Amherst.