Graph Theory,

Molecular Graphs,

Topological Graph Indices,

Chemical Applications of Graph Theory,

Spectral Graph Theory,

Chromatic Polynomials,

Digraphs,

Graph Matrices,

Number Theory,

Elliptic Curves,

Diophantine Equations,

Discrete Groups,

Modular Group,

Hecke Groups,

Regular Maps,

p-adic Analysis,

q-Calculus,

Physical Mathematics.