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Merge edit
Would it be appropriate to merge ordered exponential into this page (perhaps as a detailed example)?
Akriasas (talk) 18:33, 14 December 2007 (UTC)
I agree that the ordered exponential is a special case of path ordering, but could it be viewed as an important enough example to warrant a separate page? I think so. I feel that ordered exponentials are related to Stone's theorem on one-parameter unitary groups, but they deserve separate pages. I think a physicist might find the (time-)Ordered exponential more concrete and therefore more appealing than the more general Path ordering concept, but that's just my opinion.
Contribution of 196.224.27.85 edit
No, this source (Richard Feynman in Volume I Section 39-3 "compressibility of radiation"; see [1]) does not support the claim. Not at all. I revert. See User talk:196.224.27.85 for the third warning. Boris Tsirelson (talk) 19:27, 22 August 2018 (UTC)
Strange phrase edit
"{T} is variable in dimension 4 like that of the black hole, but constant in dimension 3 ." (From Section "Time ordering".) I do not understand this phrase. Do you? Or should it be deleted? Boris Tsirelson (talk) 06:25, 27 May 2019 (UTC)
- This phrase was added by the same anonymous user whose later content was removed by you for being unsourced. It can be safely removed - I have done so. --Qucumatz (talk) 16:16, 10 April 2021 (UTC)