test if argument is a symmetric Toeplitz matrix
Auxilary function, used to validate the input of TrenchInverse
is.toeplitz(x)
x |
value to be tested |
A symmetric Toeplitz matrix of order n has (i,j)-entry of the form g[abs(1+i-j)], where g is a vector of length n.
returns True or False according to whether x is or is not a symmetric Toeplitz matrix
A.I. McLeod
is.toeplitz(toeplitz(1:5)) is.toeplitz(5)
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