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Amiga Format CD46 (1999-10-20)(Future Publishing)(GB)[!][issue 1999-12].iso
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projspec.1
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1999-09-16
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projspec(1) Scilab Function projspec(1)
NAME
projspec - spectral operators
CALLING SEQUENCE
[S,P,D,index]=projspec(A)
PARAMETERS
A : square matrix
S, P, D : square matrices
index : integer
DESCRIPTION
Spectral characteristics of A at 0.
S = reduced resolvent at 0 (S = -Drazin_inverse(A)).
P = spectral projection at 0.
D = nilpotent operator at 0.
index = index of the 0 eigenvalue.
AUTHOR
F. D.