Extending a recent result of Santos on partitions into odd parts.
Extending Hall's theorem into list colorings: a partial history.
Extensions de quelques théorèmes de densité
Extensions of -subsets to -subsets - existence versus constructability
Extensions of the Graham-Leeb-Rothschild theorem.
Extensions of umbral calculus II: double delta operators, Leibniz extensions and Hattori-Stong theorems
We continue our programme of extending the Roman-Rota umbral calculus to the setting of delta operators over a graded ring with a view to applications in algebraic topology and the theory of formal group laws. We concentrate on the situation where is free of additive torsion, in which context the central issues are number- theoretic questions of divisibility. We study polynomial algebras which admit the action of two delta operators linked by an invertible power series, and make related constructions...
Exterior pairs and up step statistics on Dyck paths.
Extraresolvability of balleans
A ballean is a set endowed with some family of balls in such a way that a ballean can be considered as an asymptotic counterpart of a uniform topological space. We introduce and study a new cardinal invariant of a ballean, the extraresolvability, which is an asymptotic reflection of the corresponding invariant of a topological space.
Extrema in sequences.