We prove that the universal enveloping algebra of the Lawrence–Sullivan construction is a particular perturbation of the complete Baues–Lemaire cylinder of . Together with other evidence we present, this exhibits the Lawrence–Sullivan construction as the right model for . From this, we also deduce a generalized Euler formula on Bernoulli numbers.
"The Lawrence–Sullivan construction is the right model for $I^+$." Algebr. Geom. Topol. 13 (1) 577 - 588, 2013. https://doi.org/10.2140/agt.2013.13.577