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MathGroup Archive 1999

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Re: rank of matrix in mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg16045] Re: rank of matrix in mathematica
  • From: weber at math.uni-bonn.de (Matthias Weber)
  • Date: Sun, 21 Feb 1999 00:15:19 -0500
  • Organization: RHRZ - University of Bonn (Germany)
  • References: <7alqsn$nuf@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <7alqsn$nuf at smc.vnet.net>, Jan Krupa <krupa at alpha.sggw.waw.pl> wrote:

> Is there in Mathematica3.0 a function which
> evaluates the rank of matrix ? If it is how can I find
> it's description in the Mathematica help.
> 
> Thanks in advance,
> 
> Jan

Rank[m_]:=Length[Transpose[m]]-Length[NullSpace[m]]

If you work with symbolic matrices, you should know that NullSpace
assumes that the symbolic values are generic.

Regards,

Matthias


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