Morphisms of A-infinity Bialgebras and Applications

Abstract

We define the notion of a relative matrad and realize the free relative matrad as a free H_\infty-bimodule structure on cellular chains of bimultiplihedra JJ={JJ_{n,m} = JJ_{m,n}}. We define a morphism G:A => B of A_\infty-bialgebras as a bimodule over H_\infty and prove that the homology of every A_\infty-bialgebra over a commutative ring with unity admits an induced A_\infty-bialgebra structure. We extend the Bott-Samelson isomorphism to an isomorphism of A_\infty-bialgebras and identify the A_\infty-bialgebra structure of H_*(\Omega\Sigma X; Q). For each n>1, we construct a space X_n and identify an induced nontrivial A_\infty-bialgebra operation \omega_2^n : H^*(\Omega X_n; Z_2)^2 -> H^*(\Omega X_n; Z_2)^n.