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math.CT2020★ 1 cited
Monoidal Categories for Formal Concept Analysis
Sean Tull
We investigate monoidal categories of formal contexts, in which states correspond to formal concepts. In particular we examine the category of bonds or Chu correspondences between…
math.CT2019
Monoidal characterisation of groupoids and connectors
Marino Gran, Chris Heunen, Sean Tull
We study internal structures in regular categories using monoidal methods. Groupoids in a regular Goursat category can equivalently be described as special dagger Frobenius monoids…
math.CT2018
Tensor Topology
Pau Enrique Moliner, Chris Heunen, Sean Tull
A subunit in a monoidal category is a subobject of the monoidal unit for which a canonical morphism is invertible. They correspond to open subsets of a base topological space in ca…