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MathGroup Archive 2005

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Any ideas about solving an underdetermined system?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg58514] Any ideas about solving an underdetermined system?
  • From: Zhengji Li <zhengji.li at gmail.com>
  • Date: Tue, 5 Jul 2005 04:52:22 -0400 (EDT)
  • Reply-to: Zhengji Li <zhengji.li at gmail.com>
  • Sender: owner-wri-mathgroup at wolfram.com

Dear Mathematica ers,

Mathematica has a method of given the mininum-length solution.

Let (x1, x2, ...) be a solution, I want that there are as many X-es equal to 0. 

In other words, I want to solving a  underdetermined system in which
many unknowns might be 0. And if I known which ones are 0, then the
system may be simplified to a overdetermined one.

Any ideas?


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