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Feb 20, 2022 at 20:21 comment added Kostya_I @KConrad, thanks - corrected.
Feb 20, 2022 at 20:20 history edited Kostya_I CC BY-SA 4.0
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Feb 20, 2022 at 20:11 comment added KConrad @Kostya_I that is what I initially thought and got confused when I googled the term особая точка to check. I have now deleted my earlier comment since yours is correct.
Feb 20, 2022 at 20:00 comment added Kostya_I @KConrad, I believe the correct translation is "in a vicinity of singular points".
Feb 20, 2022 at 20:00 history edited Kostya_I CC BY-SA 4.0
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Feb 20, 2022 at 13:24 comment added Carlo Beenakker A reminiscence of YLR: Dima's [Dmitry Pavlovich Kostomarov's] supervisor was Yuli Lazarevich Rabinovich, associate professor of the department. Dima was lucky. Yuli Lazarevich was in love with teaching. In spite of his considerable age (now I think he was in his sixties, and we considered him elderly), he lectured with passion. His favorite catchphrase was, "No, no, an integral is not a hook." He was an expert on ordinary differential equations of the second order, especially on the behavior of solutions in the vicinity of special points.
Feb 20, 2022 at 10:21 history answered Kostya_I CC BY-SA 4.0