Question

The line separating from the top zeros from the first non-zero element is called ____

(a) Equation

(b) Gaussian solution

(c) Skyline solution

(d) Both Gaussian and skyline solutions

I had been asked this question in quiz.

This intriguing question originated from Gaussian Elimination in division Matrix Algebra and Gaussian Elimination of Finite Element Method

Answer 1

Right choice is (c) Skyline solution

Easiest explanation: If there are zeros at the top of the column, only the elements starting from the first non zero value need be stored. The line separating from the top zeroes from the first non- zero element is called Skyline solution.