Correction

In my article (M. A. Naimark, “On commutative algebras of operators in the space (\Pi_1)”), published in DAN, vol. 156, no. 4, 1964, p. 736, line 29, and in my article (M. A. Naimark, “On commutative algebras of operators in the space (\Pi_k)”), published in DAN, vol. 161, no. 4, 1965, p. 770, line 23, where “closed” is printed, read “Borel.”

M. A. Naimark