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**PhD Theses Directed**

1.** Sandra Farrier**, Howard University, Department of Mathematics, January 2005

**Thesis Title**:"Fixed-Point and Ergodic Theorems for Nonexpansive Mappings on Ultrametric Banach Spaces"

2.** Dodzi Attimu**, Howard University, Department of Mathematics, February 2008

**Thesis Title**: "Linear Operators on Some Non-Archimedean Hilbert Spaces and Their Spectral Theory"

3.** Najja Al-Islam**, Howard University, Department of Mathematics, January 2009

**Thesis Title**: "Pseudo Almost Periodic Solutions to Some Systems of Nonlinear Hyperbolic Second-Order Partial Differential Equations"

4.** George D. McNeal**, Howard University, Department of Mathematics, November 2009

**Thesis Title**: "Spectral Analysis for Rank-One Perturbations of Diagonal Operators in Non-Archimedean Hilbert Space"

**5. Valerie Nelson**, Howard University, Department of Mathematics, November 2013

**Thesis Title**: "Existence Results for Some Higher-Order Abstract Differential Equations with Applications to PDEs"

6.** Mohamed Zitane**, Université IBN TOFAIL, Morocco, December 2013

**Thesis Title**: "Existence Results for Some Nonautonomous Neutral Functional Differential Equations with Applications to PDEs"

7. **Teylama Herve Miabey**, Howard University, Department of Mathematics, April 2014

**Thesis Title**: "Spectral Analysis for Finite Rank Perturbations of Diagonal Operators in Non-Archimedean Hilbert Space"

8. **Ahmed Hassan Mohamed**, Howard University, Department of Mathematics, June 2014

**Thesis Title**: "Existence Results for Some Second-Order Evolution Equations with Damping"

**Master Theses Directed**

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**Martin Arienmughare**, Howard University, Department of Mathematics, April 2012

Thesis: "*Almost Periodic Solutions to Some Singular Systems of Differential Equations*"