Problem. Is there any complemented subspace in the Banach space $C(\beta\mathbb N\times\beta\mathbb N)$, not isomorphic to $c_0$, $c_0\oplus C(\beta\mathbb N)$, $C(\beta\mathbb N)$, $c_0(C(\beta\mathbb N))$, $C(\beta\mathbb N\times\beta\mathbb N)$?

(The problem was posed by Anastasia & Leandro in August 2015 on page 16 of Volume 0 of the Lviv Scottish Book).


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