A Posteriori Error Analysis for the Mean Curvature Flow of Graphs. - Omar Lakkis; Ricardo H. Nochetto (SIAM J. Numer. Anal., 2005)

Elliptic reconstruction and a posteriori error estimates for fully discrete linear parabolic problems. - Omar Lakkis; Charalambos G. Makridakis (Math. Comput., 2006)

A Posteriori Error Estimates in the Maximum Norm for Parabolic Problems. - Alan Demlow; Omar Lakkis; Charalambos G. Makridakis (SIAM J. Numer. Anal., 2009)

A Posteriori Error Control for Discontinuous Galerkin Methods for Parabolic Problems. - Emmanuil H. Georgoulis; Omar Lakkis; Juha M. Virtanen (SIAM J. Numer. Anal., 2011)

A Finite Element Method for Second Order Nonvariational Elliptic Problems. - Omar Lakkis; Tristan Pryer (SIAM J. Sci. Comput., 2011)

An Adaptive Finite Element Method for the Infinity Laplacian. - Omar Lakkis; Tristan Pryer (ENUMATH, 2013)

Implicit-Explicit Timestepping with Finite Element Approximation of Reaction-Diffusion Systems on Evolving Domains. - Omar Lakkis; Anotida Madzvamuse; Chandrasekhar Venkataraman (SIAM J. Numer. Anal., 2013)

A Finite Element Method for Nonlinear Elliptic Problems. - Omar Lakkis; Tristan Pryer (SIAM J. Sci. Comput., 2013)

A comparison of duality and energy a posteriori estimates for L∞(0, T;L2(Ω)) in parabolic problems. - Omar Lakkis; Charalambos G. Makridakis; Tristan Pryer (Math. Comput., 2015)

A Posteriori Error Estimates for Leap-Frog and Cosine Methods for Second Order Evolution Problems. - Emmanuil H. Georgoulis; Omar Lakkis; Charalambos G. Makridakis; Juha M. Virtanen (SIAM J. Numer. Anal., 2016)

A Least-Squares Galerkin Gradient Recovery Method for Fully Nonlinear Elliptic Equations. - Omar Lakkis; Amireh Mousavi (ENUMATH, 2019)

A least-squares Galerkin approach to gradient and Hessian recovery for nondivergence-form elliptic equations. - Omar Lakkis; Amireh Mousavi (CoRR, 2019)

Parallel two-scale finite element implementation of a system with varying microstructures. - Omar Richardson; Omar Lakkis; Adrian Muntean; Chandrasekhar Venkataraman (CoRR, 2021)

A posteriori error bounds for fully-discrete hp-discontinuous Galerkin timestepping methods for parabolic problems. - Emmanuil H. Georgoulis; Omar Lakkis; Thomas P. Wihler (Numerische Mathematik, 2021)

A least-squares Galerkin approach to gradient recovery for Hamilton-Jacobi-Bellman equation with Cordes coefficients. - Amireh Mousavi; Omar Lakkis; Reza Mokhtari (CoRR, 2022)

Existence of solution to a system of PDEs modeling the crystal growth inside lithium batteries. - Omar Lakkis; Alexandros Skouras; Vanessa Styles (CoRR, 2023)

A posteriori error estimates for the wave equation with mesh change in the leapfrog method. - Marcus J. Grote; Omar Lakkis; Carina Santos (CoRR, 2024)

Adaptive FEM with explicit time integration for the wave equation. - Marcus J. Grote; Omar Lakkis; Carina Santos (CoRR, 2025)