OH MY! I intended to say Gauss-Seidel and said Gauss-Jordan! What a mess I have created. Sorry to all for the confusion. Of course, Gauss' reduction method i

OH MY! I intended to say Gauss-Seidel and said Gauss-Jordan! What a mess I have created. Sorry to all for the confusion. Of course, Gauss' reduction method is key to understanding systems/linear maps. Gauss/Seidel is totally different, though. My apologies.