Cofinal morphism of polynomial monads and double delooping

Florian De Leger

Using the theory of internal algebras classifiers developed by Batanin and Berger, we construct a morphism of polynomial monads which we prove is homotopically cofinal. We then describe how this result constitutes the main conceptual argument for a categorical direct double delooping proof of the Turchin-Dwyer-Hess theorem concerning the explicit double delooping of spaces of long knots.

Keywords: operads, polynomial monads, delooping

2020 MSC: 18M65, 55P48

Theory and Applications of Categories, Vol. 45, 2026, No. 27, pp 1117-1146.

Published 2026-05-13.

http://www.tac.mta.ca/tac/volumes/45/27/45-27.pdf

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