[R] complex solve?

yudi@hermes.ucd.ie yudi at hermes.ucd.ie
Tue Feb 16 09:24:06 CET 1999

> Date:          Tue, 16 Feb 1999 10:05:12 +1100 (EST)
> From:          John.Peters at tip.csiro.au (John Peters)
> Subject:       [R] complex solve?
> As an electrical engineer, I am devastated to find "solve" will not find 
> the inverse of a complex matrix (using rw0632b).  Is there any workaround 
> or hope?
Yes. A complex matrix C= A+Bi  is isomorphic (w.r.t. multiplication)
 to a real matrix R defined as
      R =  A -B
              B  A
(Note the minus sign on the NE side). To solve(C) you can solve(R) and
get the appropriate sections. Ref: N.R. Goodman(1963) Ann. Math. Stat.

Yudi Pawitan: yudi at ucd.ie
Department of Statistics, UCD
Dublin 4, Ireland
Ph : 353-1-706 7641
Fax: 353-1-706 1186
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch

More information about the R-help mailing list