point spectrum

point spectrum

[′pȯint ‚spek·trəm]
(mathematics)
Those eigenvalues in the spectrum of a linear operator between Banach spaces whose corresponding eigenvectors are nonzero and of finite norm.
References in periodicals archive ?
While designer had resurgence, retailers also report action at the other end of the price point spectrum, with interest swelling in lighter fragrances.
Since every boundary point of [sigma](T) is in the approximate point spectrum [pi](T), it follows that Re[[lambda]'.
We use the result that the approximate point spectrum of a self-adjoint operator is exactly its spectrum.
The essential approximate point spectrum of T is defined as
paranormal, then spectral mapping theorem holds for essential approximate point spectrum of T.
We shall call such a matrix K an H-J generalized Hausdorff matrix, and will determind the point spectrum of H and its adjoint, H*, considered as bounded linear Operators over the [l.
We shall denote the point spectrum of an operator A by [sigma]p(A).
We first give a short review on supermodels in quantum mechanics where the main focus will be on selfsimilar supermodels, showing a point spectrum which consists of basic q-versions of the natural numbers.
The key message is now that one can determine the point spectrum of [H.
Unique features of the program include a graphical visualization of a test before actual execution, multiple real-time test graphics displays, auotomatic program control that is dependent on test conditions, and defined turning point spectrum sequences.
Other, established iron vendors are increasing their presence in the category with new, feature-filled products at both ends of the price point spectrum, from promotional $9.
The upstairs departments have given housewares a run for the money at the high end of the price point spectrum," said Janet Donner, vice president of sales for Signature Housewares.