Progress in Inverse Spectral Geometry (inbunden)
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Format
Inbunden (Hardback)
Språk
Engelska
Antal sidor
197
Utgivningsdatum
1997-10-01
Upplaga
1997 ed.
Förlag
Birkhauser Verlag AG
Medarbetare
Lapidus, Michel L.
Illustratör/Fotograf
Bibliographie
Illustrationer
V, 197 p.
Dimensioner
234 x 156 x 13 mm
Vikt
477 g
Antal komponenter
1
Komponenter
1 Hardback
ISBN
9783764357559

Progress in Inverse Spectral Geometry

av Stig I Andersson, Michel L Lapidus
Inbunden,  Engelska, 1997-10-01
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most polynomial growth on every half-space Re (z) ::::: c. Moreover, Op(t) depends holomorphically on t for Re t > O. General references for much of the material on the derivation of spectral functions, asymptotic expansions and analytic properties of spectral functions are [A-P-S] and [Sh], especially Chapter 2. To study the spectral functions and their relation to the geometry and topology of X, one could, for example, take the natural associated parabolic problem as a starting point. That is, consider the 'heat equation': (%t + p) u(x, t) = 0 { u(x,O) = Uo(x), tP which is solved by means of the (heat) semi group V(t) = e-; namely, u(*, t) = V(t)uoU* Assuming that V(t) is of trace class (which is guaranteed, for instance, if P has a positive principal symbol), it has a Schwartz kernel K E COO(X x X x Rt,E* (R)E), locally given by 00 K(x,y; t) = L>-IAk(~k (R) 'Pk)(X,y), k=O for a complete set of orthonormal eigensections 'Pk E COO(E). Taking the trace, we then obtain: 00 tA Op(t) = trace(V(t)) = 2::>- k. k=O Now, using, e. g. , the Dunford calculus formula (where C is a suitable curve around a(P)) as a starting point and the standard for- malism of pseudodifferential operators, one easily derives asymptotic expansions for the spectral functions, in this case for Op.
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Stig I Andersson, Michel L Lapidus

Innehållsförteckning

Spectral Geometry: An Introduction and Background Material for this Volume.- Geometry Detected by a Finite Part of the Spectrum.- Spectral Geometry on Nilmanifolds.- Upper Bounds for the Poincar Metric Near a Fractal Boundary.- Construction de Varits Isospectrales du Thorme de T. Sunada.- Inverse spectral theory for Riemannian foliations and curvature theory.- Computer Graphics and the Eigenfunctions for the Koch Snowflake Drum.- Inverse Spectral Geometry.- Inverse Spectral Geometry on Riemann Surfaces.- Quantum Ergodicity.

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