Talk:Free probability

Meaning
How can "random variables" be "non-commutative"? In ordinary usage "random variables" are numerical quantities and there is no naturally asociated "operation" between random varables that is an obvious candidate for being "non-commutative"? Again, it would usually be the operation that is "non-commutative", not the values being operated on, although a "group" (entailing both values and operation) might also be calleed "non-commutative". JA(000)Davidson (talk) 11:52, 23 May 2011 (UTC)
 * Not a problem, by the look of it. The variables concerned are entities such as matrices which do not in general commute.--Brian Josephson (talk) 12:02, 13 September 2023 (UTC)

Self promotion?
There seems to be a concerted effort to promote (self-promote?) Roland Speicher in this article (text, citations, and external links). Single-purpose accounts/IPs include: Although this individual's contributions to the topic may be notable, because of the apparent conflict of interest, the article should be checked for appropriate balance. Deli nk (talk) 14:35, 20 August 2019 (UTC)


 * Roland Speicher is a very highly cited expert on free probability. The mention of Speicher's work is appropriate. 2603:8000:A303:F8EC:327D:B6D:CB76:59B7 (talk) 06:59, 1 February 2023 (UTC)