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what are the strategies to deal with rank deficient matrices in solving linear systems?

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closed as too broad by azimut, Dan Rust, rschwieb, Andrey Rekalo, Dominic Michaelis Aug 20 '13 at 19:21

There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.If this question can be reworded to fit the rules in the help center, please edit the question.

perhaps constraining to have particular norm value – 911 Mar 22 '11 at 10:10
1 – t.b. Mar 22 '11 at 11:48
Can you please explain more how can I constrain to have particular norm value? thanks alot. – user8566 Mar 22 '11 at 17:00
sorry, at the moment can only suggest to read and – 911 Mar 24 '11 at 9:57