One-quasihomomorphisms from the integers into symmetric matrices

Tim Seynnaeve, Nafie Tairi, Alejandro Vargas

A function $f$ from $\mathbb{Z}$ to the symmetric matrices over an arbitrary field $K$ of characteristic $0$ is a $1$-quasihomomorphism if the matrix $f(x+y)-f(x)-f(y)$ has ran…