Use IDEAL TEST! Prove ＜a＞ = { ra | r ∈ R} is Ideal of Commutative Ring R with 1 (Principal Ideal)

New channel Bill Kinney: title sample judged 'whole' (Nearly every upload is a genuine in-depth math lecture or worked example across analysis, algebra, calculus, and statist); passed a second screen for sellers/exam-prep/re-uploads; 3 of 3 sampled transcripts showed teaching, 0 not; every title checked strictly; oEmbed verified.

A 10-minute video from Bill Kinney: “Use IDEAL TEST! Prove ＜a＞ = { ra | r ∈ R} is Ideal of Commutative Ring R with 1 (Principal Ideal)”.

Video by Bill Kinney, played through YouTube's embedded player.