In this paper one obtains a result concerning the asymptotic behaviour of the spectral function on the diagonal for SCHRODINOER operators Ah = --A + V as h -+ 0. This asymptotic change the form on the energy level V ( x ) = A.
Spectral Properties of Some Semi - Elliptic Operators in Lp
β Scribed by Vitali Shevchik
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 557 KB
- Volume
- 202
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Spectral properties of the semiβelliptic operator
equation image
in L~p~ (1 < p < β) spaces are investigated. In particular it is proved that there exists ΞΌ0 such that if ΞΌ__> ΞΌ0__, then A~ΞΌ, P~ has the point spectrum and Ξ»~k~(A~ΞΌ, P~) Λ where A~ΞΌ, P~ is the unbounded operator generated by A~ΞΌ~ in L~p~ and Ξ» k (A~ΞΌ,P~) its eigenvalues.
π SIMILAR VOLUMES
## The operator A e = D 1 g 1 (x 1 / e,x 2 )D 1 +D 2 g 2 (x 1 / e,x 2 )D 2 is considered in L 2 (R 2 ), where g j (x 1 ,x 2 ), j = 1, 2, are periodic in x 1 with period 1, bounded and positive definite. Let function Q(x 1 ,x 2 ) be bounded, positive definite and periodic in x 1 with period 1. Let
In this paper the results from [ 7, Y], concerning the asyinptotic beheviour of the spectral function 011 the ditigoiid for SCHRODISGER operators d,, = --d + V cts h -0, arc? ertenclcc~ t o the case of sonic h-admissible operators, uctiiig in R", .n m2.
The linear operator Tin an inner product space ( X , [ . , a ] ) is called contractive (expansive, XI, resp.) for all x E X . Eigenvalues, in particular those in the unit disc, and the signatures of the corresponding eigenspaces were studied e.g. ## in [IKL], [AI], [B], where also references to e