2021/09/17 by Diestel, Reinhard, Elbracht, Christian, Erde, Joshua +1
#Combinatorics (math.CO) #FOS: Mathematics
paper · doi:10.48550/arxiv.2109.08398
Applications of tangles of connectivity systems suggest a duality between these, in which for two sets X and Y the elements x of X map to subsets Yx of Y , and the elements y of Y map to subsets Xy of X, so that x∈ Xy if and only if y∈ Yx for all x∈ X and y∈ Y . We explore this duality, and relate the tangles arising from the dual systems to each other.