Comparing Diagonals on the Associahedra
Abstract
We prove that the formula for the diagonal approximation K on J. Stasheff's n-dimensional associahedron Kn+2 derived by the current authors in 2004 agrees with the "magical formula" for the diagonal approximation K derived by Markl and Shnider in 2006, by Loday in 2011, and by Masuda, Thomas, Tonks, and Vallette in 2021.
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