Talk:Free probability
How can "random variables" be "non-commutative"? In ordinary usage "random variables" are numerical quantities and there is no naturally asociated "operation"
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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:
- Rolandspeicher (talk · contribs · deleted contribs · logs · filter log · block user · block log)
- 37.230.11.30 (talk · contribs · deleted contribs · logs · filter log · block user · block log)
- 37.230.18.69 (talk · contribs · deleted contribs · logs · filter log · block user · block log)
- 37.230.0.13 (talk · contribs · deleted contribs · logs · filter log · block user · block log)
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)
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