Universal First-Order Massey Product of a Prefactorization Algebra

This paper studies the universal first-order Massey product of a prefactorization algebra, which encodes higher algebraic operations on the cohomology. Explicit computations of these structures are carried out in the locally constant case, with applications to factorization envelopes on Rᵐ R m and a compactification of linear Chern–Simons theory on R²× S¹ R 2 × S 1 .