Research

Publications

PDEs Functional Analysis Harmonic Analysis Metric Measure Spaces
2026

On the Necessity of Logarithmic Estimates for Hypoellipticity

Timur Akhunov, Lyudmila Korobenko · submitted

2025

Regularity for infinitely degenerate inhomogeneous elliptic equations, part I: the Moser method

Lyudmila Korobenko, Cristian Rios, Eric Sawyer, Ruipeng Shen · Nonlinear Analysis 261 (2025), 113888

2025

Degenerate elliptic equations with Φ-admissible weights

Lyudmila Korobenko · to appear in J. Anal. Math.

2025

Carnot-Carathéodory metrics associated to degenerate elliptic operators in three dimensions

Florian Meister, Olive Ross, Lyudmila Korobenko · Ann. Func. Anal. 17, No. 2 (2026), 1-28

2024

Necessity of a logarithmic estimate for hypoellipticity of some degenerately elliptic operators

Timur Akhunov, Lyudmila Korobenko · J. Math. Anal. Appl. 531 (2024), No. 1, 127744

2024

Weighted 1-dimensional Orlicz-Poincaré inequalities

Lyudmila Korobenko, Olly Milshtein, Lucas Yong · J. Math. Anal. Appl. 530 (2024), No. 1, 127649

2023

Sums of squares I: scalar functions

Lyudmila Korobenko, Eric T. Sawyer · J. Funct. Anal. 284 (2023), 109827

2023

Sums of squares II: matrix functions

Lyudmila Korobenko, Eric T. Sawyer · Linear Algebra Appl. 664 (2023), 264–313

2023

Sums of squares III: hypoellipticity in the infinitely degenerate regime

Lyudmila Korobenko, Eric T. Sawyer · Linear Algebra Appl. 664 (2023), 264-313

2021

Local boundedness, maximum principles, and continuity of solutions to infinitely degenerate elliptic equations with rough coefficients

Lyudmila Korobenko, Cristian Rios, Eric Sawyer, Ruipeng Shen · Memoirs of the AMS 269 (2021), No. 1311

2021

Continuity of infinitely degenerate weak solutions via the trace method

Lyudmila Korobenko, Eric T. Sawyer · J. Funct. Anal. 281 (9) (2021), 109–170

2021

Orlicz Sobolev inequalities and the Dirichlet problem for infinitely degenerate elliptic operators

Usman Hafeez, Théo Lavier, Lucas Williams, Lyudmila Korobenko · Electron. J. Differential Equations, Vol. 2021 (2021), No. 82, 1–19

2021

Orlicz Sobolev inequalities and the doubling condition

Lyudmila Korobenko · Annales Fennici Mathematici 46 (1) (2021), 153–161

2019

Hypoellipticity for Fedii's type operators under Morimoto's logarithmic condition

Timur Akhunov, Lyudmila Korobenko, Cristian Rios · J. Pseudo-Differ. Oper. Appl. 10 (3) (2019), 649–688

2019

A variation of Merton's corporate bond valuation model for firms with illiquid but observable assets

Juan Dong, Lyudmila Korobenko, Deniz Sezer · Quantitative Finance (2019)

2015

Local boundedness, maximum principles, and continuity of solutions to infinitely degenerate elliptic equations

Lyudmila Korobenko, Cristian Rios, Eric Sawyer, Ruipeng Shen · preprint

2015

From Sobolev inequality to doubling

Lyudmila Korobenko, Diego Maldonado, Cristian Rios · Proceedings of the AMS 143 (9) (2015), 4017–4028

2014

On evolutionary stability of carrying capacity driven dispersal in competition with regularly diffusing populations

Lyudmila Korobenko, Elena Braverman · Journal of Mathematical Biology 69 (5) (2014), 1181–1206

2014

Regularity of solutions to degenerate non-doubling second order equations

Lyudmila Korobenko, Cristian Rios

2014

Hypoellipticity of certain infinitely degenerate second order operators

Lyudmila Korobenko, Cristian Rios · J. Math. Anal. Appl. 409 (1) (2014), 41–55

2013

Persistence and extinction in spatial models with carrying capacity driven diffusion and harvesting

Lyudmila Korobenko, Md. Kamrujjaman, Elena Braverman · J. Math. Anal. Appl. 399 (1) (2013), 352–368

2012

On logistic models with a carrying capacity dependent diffusion: stability of equilibria and coexistence with a regularly diffusing population

Lyudmila Korobenko, Elena Braverman · Nonlinear Analysis: Real World Applications 13 (6) (2012), 2648–2658

2011

On permanence and stability of a logistic model with harvesting and a carrying capacity dependent diffusion

Lyudmila Korobenko, Elena Braverman · Journal of Nonlinear Systems and Applications 2 (1-2) (2011), 9–15

2011

IMUS Lecture Notes on Harmonic Analysis, Metric Spaces and PDEs

Lucas Chaffee, Taylor Dupuy, Rafael Espínola, Jarod Hart, Anna Kairema, Lyudmila Korobenko (eds.) · Seville 2011 lecture notes

2010

ODE analysis of a cancer pathway

Matt Hennessy, Lyudmila Korobenko, Iain Moyles · Report, 9th Annual PIMS IPSW, University of Calgary

2009

Dynamics of a large ocean vessel

Matt Hennessy, Lyudmila Korobenko, Iain Moyles · Report, 9th Annual PIMS GIMMIC, University of Calgary

2009

Formulation and well-posedness of the Cauchy problem for a diffusion equation with discontinuous degenerating coefficients

Lyudmila Korobenko, Vsevolod Zh. Sakbaev · Comput. Math. Math. Phys. 49 (6) (2009), 1037–1053

2009

A logistic model with a carrying capacity driven diffusion

Lyudmila Korobenko, Elena Braverman · Can. Appl. Math. Quart. 17 (2009), 85–100

2008

On a description of a diffusion phenomena in discontinuous medium

Lyudmila Korobenko · Some Problems of Fundamental and Applied Mathematics (2008), 34–49 [in Russian]

2006

Solution of the diffusion equation with discontinuous coefficient on a real line

Lyudmila Korobenko, Vsevolod Zh. Sakbaev · Some Problems of Fundamental and Applied Mathematics (2006), 71–85 [in Russian]