Homotopy types of box complexes

Honeycomb arrays

Hook Length Formulas for Trees by Han's Expansion

Hook length polynomials for plane forests of a certain type

Hook lengths and shifted parts of partitions

Hook-content formulae for symplectic and orthogonal tableaux

Hook-lengths and Pairs of Compositions

Hooks and powers of parts in partitions

Hopf algebras and dendriform structures arising from parking functions

Hopf Algebras and Edge-Labeled Posets

Hopf algebras of diagrams

Hopf Algebras of Graphs

Hopf monoids from class functions on unitriangular matrices

Hopf structures on the multiplihedra

House of Graphs: a database of interesting graphs

How close can we come to a parity function when there isn't one?

How Complex are Random Graphs in First Order Logic?

How far can Nim in disguise be stretched?

How frequently is a system of 2-linear Boolean equations solvable?

How is a Chordal Graph like a Supersolvable Binary Matroid?