Graph complexes, Kontsevich's characteristic classes and formal smooth structures

Cayley maps and bi-Cayley maps and their symmetries

Beyond chromatic threshold via $(p,q)$-theorem, and sharp blow-up phenomenon

Foam evaluation and its applications

Extremal spectral results of planar graphs without vertex-disjoint cycles

Ramsey number of books versus cycles

Nowhere-zero 3-flows in signed graphs with independence number at most two

New algorithms for hypergraph partitioning problems