Assistant Professor of Mathematics

The
University of Tennessee, Knoxville

Telephone: (865) 974-4271

Email: mengesha@utk.edu

Research topics of
interest

- Mathematics
of Materials Science, Calculus of Variations and
Homogenization

- Weighted-W
^{1,p}estimates for weak solutions of degenerate elliptic equations with coefficients degenerate in one variable, (with T. Phan)**Submitted, PDF.**

- Weighted-W
^{1,p}estimates for weak solutions of degenerate and singular elliptic equations, (with D. Cao and T. Phan)**,****To appear in Indiana University Mathematics Journal****,****PDF.**

- Gradient
weighted norm inequalities for linear elliptic
equations with discontinuous coefficients, (with
K. Adimurthi, and N.C. Phuc).
**To appear in the Journal of Differential and Integral Equations, PDF.**

- Characterization
of function spaces of vector fields and an application
in nonlinear peridynamics,
**Nonlinear Analysis and Series A: Theory, Methods & Applications, Vol. 140, 82-111, 2016****PDF.**

- Quasilinear
equations with general structures and divergence data on
Reifenberg flat domains (with N.C. Phuc),
**Journal of Differential Equations 260, 5421-5449, 2016 PDF.**

- On
the variational limit of a class of nonlocal functionals
related to peridynamics (with Q. Du),
,**Nonlinearity****28,****3999- 4035, 2015 PDF.**

- Multiscale
analysis of linear evolution equations with applications
to nonlocal models for heterogeneous media (with Q. Du,
R. Lipton),
*to appear*in ESAIM:Mathematical Modelling and Numerical Analysis, PDF.

- Localization
of nonlocal gradients in various topologies(with D.
Spector),
*Calculus of Variations and P**DE***,****52, 1–2, pp 253–279, 2015**PDF.

- Multiscale
analysis of a linear peridynamic solid (with Q. Du),
,*Communications in Mathematical Sciences***Vol 13, No. 15, 1193-1218, 2015 PDF.**

- The
peridynamic system as a nonlocal boundary value problem
(with Q. Du),
**Journal of Elasticity,****116, 27-51, 2014****, PDF.**

- The
bond based peridynamic system with Dirichlet-type volume
constraint (with Q. Du),
**Proc. of the Royal Soc. of Edinburgh: Section A**, 144, 161-186, 2014. PDF

- Analysis
of the peridynamic model for sign changing kernels (with
Q. Du),
**Discrete and****Continuous Dynamical Systems- Series B**,**Vol 18, no 5, 1415-1437**,**2013**, PDF.

- Nonlocal Korn-type
characterization of Sobolev vector fields, Communication
in Contemporary Mathematics, 14 (2012),
**PDF**.

- Global estimates for
quasilinear elliptic equations on Reifenberg flat
domains (with N.C.Phuc)
**,**Archive for Rational Mechanics and Analysis, Vol 203, no 1, 189 - 216,(2012),**PDF**.

- Representation formulas for L-infinity norms of weakly convergent sequences of gradient fields in homogenization, (with R. Lipton), ESAIM:Mathematical Modelling and Numerical Analysis, 46 1121-1146, (2012), PDF.

- Weighted and regularity
estimates for nonlinear equations on Reifenberg flat
domains, (with N.C. Phuc), Journal
of Differential Equations 250, 1, 1485-2507, 2011, PDF.

- Results on Nonlocal Boundary
value problems, (with B. Aksoylu), Numerical
Functional Analysis and Optimization, 31, 12,
1301-1317, 2010, PDF.

- Sufficient
conditions for strong local minima: the case of C^1
extremals, (with Y. Grabovsky),
*Transactions of the AMS.***361**, No. 3, 1495–1541, 2009, PDF.

- Direct approach
to the problem of strong local min in Calculus of
Variations., (with Y. Grabovsy),
*Calculus of Variations and PDE*,**29**, No. 1, 59-83, 2007, PDF.

- Sufficient Conditions for local minimizers in Calculus of Variations. Ph.D. thesis, 2007. Temple University.