Sipacheva O. A non-R-factorizable product of R-factorizable groups // Topology and its Applications. — 2025. — Vol. 373. — P. 109529.
Аннотация
An example of two zero-dimensional R-factorizable groups whose product is not R-factorizable is constructed. One of these groups is second-countable and the other Lindelöf to any finite power.