Is it by mathematical induction the best way to prove that the determinant of an upper (lower) triangular matrix is the product of the elements of the main diagonal? Actually, I am wondering about which is the most intuitive strategy for proving this claim.
2026-04-08 05:47:44.1775627264
Proof strategy about a property of triangular matrices
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I find induction and Laplace expansion on the first column or row to be the easiest way.