Cristian Rios

Associate Professor; Associate Head Research

Department of Mathematics and Statistics

PhD

University of Minnesota, 2001

Masters Math

University of Minnesota, 1998

Liceanciatura en Matemáticas

Universidad Nacional del Litoral, Santa Fe, Argentina, 1994

Contact information

Phone

Office: 403.220.3221

Web presence

website

Location

Office : MS546

Courses


Research and teaching

Research areas

  • Analysis and partial differential equations
  • Quasilinear and fully nonlinear partial differential equations
  • Degenerate elliptic equations
  • Monge-Ampere equations
  • Evolutionary equations
  • Numerical methods for differential equations
  • The mathematics of machine learning

Research Supervision

  • Currently accepting graduate students for Ph.D. and Masters program.
  • Currently accepting undergraduate students for research projects. 
  • Currently seeking to hire postdoctoral fellows.

Please contact me by email for more information.


Publications

Journal articles - peer reviewed

  • Rios, Cristian, David Cruz-Uribe and José María Martell. "On the Kato problem and extensions for degenerate elliptic operators.". Analysis and PDE 11.3 (2018): 609-660. Print.
  • Rios, Cristian, Lyudmila Korobenko and Diego Maldonado. "From Sobolev Inequality to Doubling". Proceedings of the American Mathematical Society 143.9 (2015): 4017-4028. Print.
  • Rios, Cristian and Cruz-Uribe, David. "The Kato problem for operators with weighted ellipticity". Transactions of the American Mathematical Society 367.7 (2015): 4727-4756. Print.
  • Rios, Cristian and Korobenko, Lyudmila. "Hypoellipticity of certain infinitely degenerate second order operators". Journal of Mathematical Analysis and Applications 409.1 (2014): 41–55. Print.
  • Rios, Cristian, Sawyer, Eric and Wheeden, Richard. "Hypoellipticity for infinitely degenerate quasilinear equations and the Dirichlet problem". Journal d'Analise Mathematíque 119. (2013): 1-62. Print.
  • Rios, Cristian and Cruz-Uribe, David. "The solution of the Kato problem for degenerate elliptic operators with Gaussian bounds". Transactions of the American Mathematical Society 364.7 (2012): 3449–3478. Print.
  • Rios, Cristian and Sawyer, Eric. "Smoothness of radial solutions to Monge-Ampère equations". Proceedings of the American Mathematical Society 137.4 (2009): 1373-1379. Print.
  • Rios, Cristian and Cruz-Uribe, David. "Gaussian bounds for degenerate parabolic equations". Journal of Functional Analysis 255.8 (2008): 283-312. Print.
  • Rios, Cristian, Sawyer, Eric and Wheeden, Richard. "Regularity of subelliptic Monge-Ampère equations". Advances in Mathematics 217.3 (2008): 967-1026. Print.
  • Rios, Cristian, Sawyer, Eric and Wheeden, Richard. "A priori estimates for infinitely degenerate quasilinear equations". Differential Integral Equations 21.1-2 (2008): 131-200. Print.
  • Rios, Cristian. "L^p regularity of the Dirichlet problem for elliptic equations with singular drift". Publicacions Mathematíque 50.2 (2006): 475-507. Print.
  • Rios, Cristian, Sawyer, Eric and Wheeden, Richard. "A higher-dimensional partial Legendre transform, and regularity of degenerate Monge-Ampère equations". Advances in Mathematics 193.2 (2005): 373-415. Print.
  • Rios, Cristian. "The L^p Dirichlet problem and nondivergence harmonic measure". Transactions of the American Mathematical Society 355.2 (2003): 665-687. Print.

PhD thesis

  • Rios, Cristian. Sufficient conditions for the absolute continuity of the nondivergence harmonic measure 2001.