The Frobenius Problem - Proving that gcd(m,n) must be 1

Whole-channel inclusion: ritvikmath is an honest teaching channel (title sample + 3 transcripts read: Two of three samples are genuine structured tutorials/lectures, consistent with the 'whole channel' teaching verdict, though one is a personal trading-experiment vlog outlier.); this title passed a strict title check (sonnet) after a labelling pass.