The Lawrence–Sullivan construction is the right model forI+

Urtzi Buijs, Aniceto Murillo
2013 Algebraic and Geometric Topology  
We prove that the universal enveloping algebra of the Lawrence-Sullivan construction is a particular perturbation of the complete Baues-Lemaire cylinder of S^0. Together with other evidences we present, this exhibits the Lawrence-Sullivan construction as the right model of I^+. From this, we also deduce a generalized Euler formula on Bernoulli numbers.
doi:10.2140/agt.2013.13.577 fatcat:xsrqc6dip5fn5e2csel7nz7hnu