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20162023
most citedThe adjoint braid arrangement as a combinatorial Lie algebra via the Steinmann relations

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math.CO2022

Braid arrangement bimonoids and the toric variety of the permutohedron

William Norledge

We show that the toric variety of the permutohedron (=permutohedral space) has the structure of a cocommutative bimonoid in species, with multiplication/comultiplication given by e…