2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/67973We develop a symmetric analog of brace algebras and discuss the relation of such algebras to $L_{\infty}$-algebras. We give an alternate proof that the category of symmetric brace algebras is isomorphic to the category of pre-Lie algebras. As an application, symmetric braces are used to describe transfers of strongly homotopy structures. We then explain how these symmetric brace algebras may be used to examine the $L_{\infty}$-algebras that result from a particular gauge theory for massless particles of high spin.19 pages; two new sections added: "Equivalence between symmetric brace algebras and pre-Lie algebras" and "Transfers of strongly homotopy structures"Quantum Algebratext