Теорія міри та інтеграла. Задачі. 3. Зовнішня міра. Продовження міри

New channel Vadym Radchenko: title sample judged 'whole' (Nearly every upload is a structured mathematics/finance lecture (measure theory, stochastic analysis, investment theory)); 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.