Research Interests

★ 05C05 —Trees

★ 05C07 —Vertex degrees

★ 05C10 — Planar graphs; geometric and topological aspects of graph theory

☆ planar graphs

☆ 1-planar graphs

☆ plane graphs with independent crossings (IC-planar graphs)

☆ plane graphs with near-independent crossings (NIC-planar graphs)

☆ outer-1-planar graphs (psuedo-outerplanar graphs)

★ 05C15 — Coloring of graphs and hypergraphs

☆ edge coloring

☆ total coloring

☆ list (edge/total) coloring

☆ acyclic (edge) coloring

☆ equitable coloring

☆ group coloring

☆ (p,1)-total labelling

☆ tree coloring

★ 05C35 — Extremal problems

★ 05C70 — Factorization, matching, partitioning, covering and packing

☆ cycles-packing problems

★ 05C75 — Structural characterization of families of graphs

☆ light subgraphs in a given class of graphs

★ 05D40 —Probabilistic methods