The GL-l.u.st.\ constant and asymmetry of the Kalton-Peck twisted sum in finite dimensions

Y. Gordon, M. Junge, M. Meyer +1

We prove that the Kalton-Peck twisted sum $Z_2^n$ of $n$-dimensional Hilbert spaces has GL-l.u.st.\ constant of order $\log n$ and bounded GL constant. This is the first concrete e…