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Questions designed to get an overview of a specific subject or body of results or to understand the relations among similar definitions, techniques or concepts appearing in different sub-fields of mathematics. While such questions by their very nature sometimes cannot be made very narrow and focused, it can be helpful to keep in mind that the design of MathOverflow does not make it a good fit for questions that are too broad.

27 votes

What is a cumulant really?

A nice question, with probably many possible answers. I'll give it a shot. I think three phenomena should be noted. i) The cumulant function is the Laplace transform of the probability distribution. U …
Martin Sleziak's user avatar