Diagonals of separately continuous functions and their analogs

Olena Karlova, Volodymyr Mykhaylyuk, Oleksandr Sobchuk

We prove that for a topological space $X$, an equiconnected space $Z$ and a Baire-one mapping $g:X\to Z$ there exists a separately continuous mapping $f:X^2\to Z$ with the diagonal…