# Executive Editors and their topics

**Irina Astashova**

qualitative and asymptotic theory of ordinary differential equations, control problems

**Mikhail A. Botchev**

numerical analysis

**Hemen Dutta**

functional equations and inequalities, convexity and its applications, fixed point theory for singlevalued and multivalued operators

**Sándor Fegyverneki**

robust estimators and regressions, applied mathematics

**Michal Fečkan**

qualitative analysis of differential and difference equations

**Stephan Foldes**

finite posets, comparability graphs, Hasse diagrams, binary trees

**Attila Házy**

functional equations and inequalities, convexity and its applications

**Árpád Kurusa**

differential geometry, metric geometry

**Zhenhai Liu**

ordinary and partial differential equations, nonlinear analysis

**Judit Makó**

functional equations and inequalities, convexity and its applications

**Nino Partsvania**

ordinary differential equations, boundary value problems

**Adrian Petruşel**

fixed point theory for singlevalued and multivalued operators

**Sándor Radeleczki**

lattice theory and partially ordered sets

**Maria Alessandra Ragusa**

partial differential equations

**Csaba Rakaczki**

number theory, diophantine equations, polynomials

**Miklós Rontó**

ordinary differential equations, boundary value problems

**András Rontó**

boundary value problems, functional differential equations

**H. M. Srivastava**

real and complex analysis, fractional calculus and its applications, analytic number theory

**Jenő Szigeti**

associative rings and algebras, ordered algebraic structures

**Leon van Wyk**

matrix algebras, matrix rings

**Jiří Šremr**

ordinary differential equations, boundary value problems, oscillation theory