On the Asymptotic Distribution of a Spectrum of Polynomial Bundles of Differential Operators

Verfasser / Beitragende:
[Z. Tsikhistavi]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Mathematical Sciences, 208/6(2015-08-01), 723-758
Format:
Artikel (online)
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024 7 0 |a 10.1007/s10958-015-2480-8  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10958-015-2480-8 
100 1 |a Tsikhistavi  |D Z.  |u Georgian Technical University, Tbilisi, Georgia  |4 aut 
245 1 0 |a On the Asymptotic Distribution of a Spectrum of Polynomial Bundles of Differential Operators  |h [Elektronische Daten]  |c [Z. Tsikhistavi] 
520 3 |a We study the asymptotic distribution of eigenvalues of polynomial operator bundles, i.e., of operator polynomials P(z) = P0 + zP1 + · · · zmPm, where z is a spectral parameter and Pj , j = 0, 1, . . . ,m, are linear operators in the Hilbert space . Problems on eigenvalues considered on a closed manifold and in a bounded domain of the Euclidean space lead to bundles of the form P(z) = P0 + zP1 + · · · zmPm with unbounded coefficients such that the asymptotic behavior of their eigenvalues is defined by all operators Pk, k = 0, 1, . . . ,m. We describe classes of bundles whose eigenvalues tend to infinity on a complex plane along a finite number of rays coming out from the origin. Thus the set of all eigenvalues can be partitioned into a finite number of series depending on the ray along which they tend to infinity. Separately for each series, we obtain the main term of the asymptotics of the corresponding function of distribution of eigenvalues. Also, the asymptotic behavior of a spectrum of square bundles arising as a result of separation of variables in the equilibrium problem for an elastic semi-cylinder is studied. 
540 |a Springer Science+Business Media New York, 2015 
773 0 |t Journal of Mathematical Sciences  |d Springer US; http://www.springer-ny.com  |g 208/6(2015-08-01), 723-758  |x 1072-3374  |q 208:6<723  |1 2015  |2 208  |o 10958 
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950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10958-015-2480-8  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 100  |E 1-  |a Tsikhistavi  |D Z.  |u Georgian Technical University, Tbilisi, Georgia  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Mathematical Sciences  |d Springer US; http://www.springer-ny.com  |g 208/6(2015-08-01), 723-758  |x 1072-3374  |q 208:6<723  |1 2015  |2 208  |o 10958