eigvals
eigvals(A,[irange,][vl,][vu]) -> values
Returns the eigenvalues of A
. If A
is Symmetric
, Hermitian
or SymTridiagonal
,
it is possible to calculate only a subset of the eigenvalues by specifying either a
UnitRange
irange
covering indices of the sorted eigenvalues, or a pair vl
and vu
for the lower and upper boundaries of the eigenvalues.
For general non-symmetric matrices it is possible to specify how the matrix is balanced
before the eigenvector calculation. The option permute=true
permutes the matrix to
become closer to upper triangular, and scale=true
scales the matrix by its diagonal
elements to make rows and columns moreequal in norm. The default is true
for both
options.
Examples
julia> eigvals(10) - 6
1-element Array{Float64,1}:
4.0
See Also
Ac_ldiv_B, Ac_ldiv_Bc, Ac_mul_B, Ac_mul_Bc, Ac_rdiv_B, Ac_rdiv_Bc, At_ldiv_B, At_ldiv_Bt, At_mul_B, At_mul_Bt, At_rdiv_B, At_rdiv_Bt, A_ldiv_Bc, A_ldiv_Bt, A_mul_B!, A_mul_Bc, A_mul_Bt, A_rdiv_Bc, A_rdiv_Bt, Bidiagonal, cond, conv2, det, diag, diagind, diagm, diff, eig, eigvals, eigvecs, expm, eye, full, inv, isdiag, ishermitian, isposdef, isposdef!, issym, istril, istriu, logabsdet, logdet, lyap, norm, qrfact, rank, repmat, rot180, rotl90, rotr90, sortrows, sqrtm, SymTridiagonal, trace, Tridiagonal, tril, tril!, triu, triu!, writedlm,User Contributed Notes
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