Almost orthogonal series
Author:
Richard Bellman
Journal:
Bull. Amer. Math. Soc. 50 (1944), 517-519
DOI:
https://doi.org/10.1090/S0002-9904-1944-08180-9
MathSciNet review:
0010639
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Additional Information
DOI:
https://doi.org/10.1090/S0002-9904-1944-08180-9