Triangular Matrices Flashcards by Kaylee Kut | Brainscape

Q

Upper Triangular

A

all entries below main diagonal are zeros

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Q

Lower Triangular

A

all entries above main diagonal are zero

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Q

Keep Triangular while getting to RREF

A

if only use Ei(r) and Eij(r) when i > j [i < j] to get to RREF it will stay lower [upper] triangular

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Q

Diagonal Entry of Zero

A

if there is a diagonal entry of zero while in RREF = rank < n = no inverse

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