For citations:

Mir N.A., Polyakov N.L. On the canonical Ramsey theorem of Erd˝os and Rado: a short proof using ultrafilter theory. Chebyshevskii Sbornik. 2024;25(3):396-407. (In Russ.) https://doi.org/10.22405/2226-8383-2024-25-3-396-407