Distribution ensemble

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Let $I$ be a countable index set. An ensemble indexed by $I$ is a sequence of random variables indexed by $I$ . Namely, $X = \{X_i\}_{i \in I}$ , where the $X i$ 's are random variables, is an ensemble indexed by $I$ .

[edit] References

Goldreich, Oded (2001). Foundations of Cryptography: Volume 1, Basic Tools. Cambridge University Press. ISBN 0-521-79172-3. Fragments available at the author's web site.