H. R. LEPROFESSEUR  SUBJECTS  SHOP

 SUBJECTS } ALGORITHMS } Q/A: LUP Decomposition, why do we need the P? Why the LU will give us a wrong result?

"P" i.e. partial pivoting, by using that strategy we improve stability of LU, and avoid the problem of having zero element on U's diagonal with only exception when all diagonal U are simultaneously zero.

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