Hellow guys, Welcome to my website, and you are watching Натуральные числа, расширение R, модуль, грани, супремум и инфимум | Лекция 2 | Правдин К.В. | ИТМО. and this vIdeo is uploaded by Плюс ЦЭ at 2025-09-15T13:31:00-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.