48 citations · 118 across the 21 of their papers we have counts for
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math.CO2023
A computation of the ninth Dedekind Number
Christian Jäkel
In this article, we present an algorithm to compute the 9th Dedekind Number. The key aspects are the use of matrix multiplication and symmetries in the free distributive lattice, w…
math.CO2015★ 1 cited
A unified categorical approach to graphs
Christian Jäkel
For a set-endofunctor , we extend the notion of universal -coalgebras to -graphs. These generalized coalgebras are models for various types of graphs, such as (un)directed…
math.CO2015
A coalgebraic model of graphs
Christian Jäkel
For a set-endofunctor , a graph is triple with a structure map . This model is a generalized coalgebra over the category of sets. In this note, we…