00688naa#a2200181#i#450# EN\\bibl\4515 20241024142357.4 20201219b2020####ek#y0engy0150####ca RU Point calculus. Historical background and basic definitions Conference article/thesis Nizhny Novgorod ANO "Scientific and Research Center for Information in Physics and Technique" 2020 6 с. Conference article/thesis local Математика. 51 Общие вопросы математики. 27.01 grnti Balyuba Ivan Grigor'evich Konopatskiy Evgeny Viktorovich srcipt.editorum.ru