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Amiga Format CD46 (1999-10-20)(Future Publishing)(GB)[!][issue 1999-12].iso
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fineta.1
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1999-09-16
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799b
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67 lines
fineta(1) Scilab Function fineta(1)
NAME
fineta - reduced pencil
CALLING SEQUENCE
[Er,Ar,Q,Z]=fineta(F)
[Er,Ar,Q,Z]=fineta(E,A)
PARAMETERS
F : real matrix pencil F=s*E-A
E,A : two real matrices of same dimensions
Q,Z : two orthogonal matrices (not necessarily square)
Er,Ar : two real matrices of same dimensions (reduced pencil)
DESCRIPTION
Returns the finite + eta part of the pencil F=sE-A.
Er=Q*E*Z, Ar=Q*A*Z has only finite and eta Kronecker invariants and Er is
full column rank.
Q : left (row)-subspace associated with finite and eta part of the pencil
For a regular pencil Q spans the left finite eigenspace.
AUTHOR
F. D & R. N.
SEE ALSO
kroneck, pencan, epsfin