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A note on an ill-posed problem for the heat equation

Published online by Cambridge University Press:  09 April 2009

Giorgio Talenti
Affiliation:
Istituto Matematico, U. Dini viale Morgani 67/A, Firenze, Italy
Sergio Vessella
Affiliation:
Istituto Matematico, U. Dini viale Morgani 67/A, Firenze, Italy
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Abstract

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In this paper an ill-posed problem for the heat equation is investigated. Solutions u to the equation ut – uxx = 0, which are approximately known on the positive half-axis t = 0 and on some vertical lines x = x1,…, x = xn, are considered and stability estimates of these solutions are presented. We assume an a priori bound, governing the heat flow across the boundary x = 0.

MSC classification

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1982

References

[1]Anderssen, R. S. and Saull, V. A., ‘Surface temperature history determination from borehole measurements’, Mathematical Geology 5 (1973).Google Scholar
[2]Cannon, J. R., ‘Some heat conduction problems’, to appear.Google Scholar
[3]Cannon, J. R., ‘A Cauchy problem for the heat equation’, Ann. Mat. Pura Appl. (4) 66 (1964), 155166.CrossRefGoogle Scholar
[4]Cannon-R, J. R.. Klein, E., ‘Optimal selection of measurement locations in a conductor for approximate determination of temperature distributions’, J. Dyn. Syst. Meas. & Control 93 (1971), 193199.CrossRefGoogle Scholar
[5]Cannon, J. R., ‘A direct numerical procedure for the Cauchy problem for the heat equation’, J. Math. Anal. Appl. 56 (1976).CrossRefGoogle Scholar
[6]Glasko, V. B., Zakharov, M. V. and Kolp, A. Ya, ‘Application of the regularization method to solve an inverse problem of non-linear heat-conduction theory’, U.S.S.R. Computational Math. and Math. Phys. (1975), 244248.CrossRefGoogle Scholar
[7]Manselli, P. and Miller, K., ‘Calculation of the surface temperature and heat flux on one side of a wall from measurements on the opposite side’, Ann. Mat. Pura Appl. (4), 123 (1980), 161183.CrossRefGoogle Scholar
[8]Miller, K., ‘Least squares methods for ill-posed problems with a prescribed bound’, SIAM J. Math. Anal. 1 (1970), 5274.CrossRefGoogle Scholar
[9]Talenti, G., ‘Sui problemi mal posti’, Boll. Un. Mat. Ital. A 15 (1978), 129.Google Scholar
[10]Tikhonov, A. A. and Glasko, V. V., ‘Methods of determining the surface temperature of a body’, Z. Vyĉisl. Mat. i Mat. Fiz. 7 (1967), 910914.Google Scholar
[11]Widder, D. V., The heat equation (Academic Press, New York, 1975).Google Scholar