Jan-Hendrik de Wiljes

collaborators

2 papers

math.CO2023

LDP polygons and the number 12 revisited

Ulrike Bücking, Christian Haase, Karin Schaller +1

We give a combinatorial proof of a lattice point identity involving a lattice polygon and its dual, generalizing the formula $a r e a (Δ) + a r e a (Δ^{*}) = 6$ for reflexive $Δ$ . The identi…

math.NT2017

Complete Subgraphs of the Coprime Hypergraph of Integers III: Construction

Jan-Hendrik de Wiljes

The coprime hypergraph of integers on $n$ vertices $C H I_{k} (n)$ is defined via vertex set ${1, 2, \dots, n}$ and hyperedge set $\{\{v_1,v_2,\dots,v_{k+1}\}\subseteq\{1,2,\dots,n\}:\gc…