復習動画：離散数理工学 (第7回) 離散代数：有限群の応用 2021年11月30日

New channel Yoshio Okamoto: title sample judged 'whole' (This is a university professor's channel of full-length recorded lectures on discrete mathematics, algorithms, and theor); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.