Abstract
Abstract inverse source problem of identifying the source function f in the abstract Cauchy problem \(u_t+Au=f(t),\, 0<t<\tau \) with \(u(0)=\phi _0\) when the data, the final value, \(u(\tau )=\phi _\tau \) is noisy is considered, where A is a densly defined self-adjont coercive unbounded operator on a Hilbert space H. This problem is known to be an ill-posed problem. A truncated spectral representation of a mild solution of the above problem is shown to be a regularized approximation, and error analysis is carried out when \(\phi _\tau \) is noisy as well as exact, and stability estimate is given under appropriate parameter choice strategies.
Similar content being viewed by others
References
Hasanov, A., and M. Slodicka. 2013. An analysis of inverse source problems with final time measured output data for heat conduction equation: a semigroup approch. Applied Mathematics Letters 26: 207–214.
Jana, A., and M.T. Nair. 2016. Truncated spectral regularization for an ill-posed non-homogeneous parabolic problem. Journal of Mathematical Analysis and Applications 438: 351–372.
Pazy, A. 1983. Semigroups of linear operators and application to partial differential equations. New York: Springer.
Yosida, K. 1980. Functional analysis. Heidelberg: Springer.
Acknowledgements
Ajoy Jana acknowledges the support received from the University Grant Commission, Government of India, for financial support. Sanction no is Sr. No. F.2-12/2002(SA-I), Ref No: Acad./R3/J.Rpt/2014.
Author information
Authors and Affiliations
Corresponding author
Additional information
Submited for publication in the the special volume of ICMAA 2016.
Rights and permissions
About this article
Cite this article
Jana, A., Nair, M.T. A truncated spectral regularization method for a source identification problem. J Anal 28, 279–293 (2020). https://doi.org/10.1007/s41478-018-0080-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s41478-018-0080-y