On Brenti's conjecture about the log-concavity of the chromatic polynomial
On Brlek-Reutenauer conjecture
On Brylawski's generalized duality
On building 4-critical plane and projective plane multiwheels from odd wheels
On Cantor's singular moments
On cardinality constrained cycle and path polytopes
On Cayley's Enumeration of Alkanes (or 4-Valent Trees)
On certain arithmetic properties of Stern polynomials
On certain multiple Bailey, Rogers and Dougall type summation formulas
On certain organic compounds with one mono-substitution and at least three di-substitution homogeneous derivatives
On certain spaces of lattice diagram determinants
On certain spaces of lattice diagram polynomials
On Characteristic Polynomials of the Family of Cobweb Posets
On characteristics of homomorphism and embedding universal graphs
On chromatic number of unit-quadrance graphs (finite Euclidean graphs)
On circuits and serial symmetric basis-exchange in matroids
On cluster variables of rank two acyclic cluster algebras
On Cobweb Admissible Sequences - The Production Theorem
On Cobweb Posets and Discrete F-Boxes Tilings
On cobweb posets and their combinatorially admissible sequences