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Published online by Cambridge University Press: 20 November 2018
If {avα: or = 1, 2, …, N }, with Nv → ∞ as v → ∞, is a double sequence of real numbers with the property that , then
1.1
is known in statistical literature as the Wald- Wolfowitz- Noether condition and it plays an important role in the proofs of certain types of central limit theorems (see e. g., [ l ], [2] ).
This work was done while the authors were attending the summer Institute of the Canadian Mathematical Congress, Vancouver, 1965.