Donal O'Regan

Topological Fixed Point Theory for Singlevalued and Multivalued Mappings and Applications

Constant-Sign Solutions of Systems of Integral Equations

Theory of Translation Closedness for Time Scales: With Applications in Translation Functions and Dynamic Equations

Oscillation Theory for Difference and Functional Differential Equations

Theory of Singular Boundary Value Problems

Oscillation Theory for Second Order Linear, Half-Linear, Superlinear and Sublinear Dynamic Equations

Singular Differential and Integral Equations with Applications

Hardy Type Inequalities on Time Scales

Oscillation Theory for Second Order Dynamic Equations

500 Examples and Problems of Applied Differential Equations

Non-Instantaneous Impulses in Differential Equations

Positive Solutions of Differential, Difference and Integral Equations

Oscillation and Stability of Delay Models in Biology

Fixed Point Theory in Metric Type Spaces

Infinite Interval Problems for Differential, Difference and Integral Equations

Topology and Approximate Fixed Points

Dynamic Inequalities On Time Scales

Set Valued Mappings with Applications in Nonlinear Analysis

An Introduction to Real Analysis