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This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics articles
Yes, the dictionary gave you appreciate for whatever this was in the original language, but in this context it is better to use sawunderstandremarked etc. Appreciate can sometimes mean understand but not here, not in this sense. 2A01:CB0C:CD:D800:60FE:A4E2:BB36:340C (talk) 11:39, 3 April 2021 (UTC)[reply]
Similarly "at variance with other conventional perturbation theories" is an odd and unidiomatic use of that phrase; possible here is for instance by contrast. 2A01:CB0C:CD:D800:60FE:A4E2:BB36:340C (talk) 11:41, 3 April 2021 (UTC)[reply]