On automorphisms of the Banach space $\ell _\infty /c_0$
On automorphisms of the Banach space $\ell _\infty /c_0$
We investigate Banach space automorphisms $T:\ell _\infty /c_0\rightarrow \ell _\infty /c_0 $ focusing on the possibility of representing their fragments of the form $$T_{B,A}:\ell _\infty (A)/c_0(A)\rightarrow \ell _\infty (B)/c_0(B)$$ for $A, B\subseteq