Monotonicity of input-output mappings in inverse coefficient and source problems for parabolic equations

HASANOV, Alemdar; Demir, ALİ; Erdem, ARZU

doi:10.1016/j.jmaa.2007.01.097

Monotonicity of input-output mappings in inverse coefficient and source problems for parabolic equations

Atıf İçin Kopyala

HASANOV A., Demir A., Erdem A.

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, cilt.335, sa.2, ss.1434-1451, 2007 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 335 Sayı: 2
Basım Tarihi: 2007
Doi Numarası: 10.1016/j.jmaa.2007.01.097
Dergi Adı: JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1434-1451
Kocaeli Üniversitesi Adresli: Evet

Özet

This article presents a mathematical analysis of input-output mappings in inverse coefficient and source problems for the linear parabolic equation u(t) = (k(x)u(x))(x) + F(x, t), (x, t) is an element of ohm(T) := (0, 1) x (0, T]. The most experimentally feasible boundary measured data, the Neumann output (flux) data f (t) := -k(0)u(x)(0, t), is used at the boundary x = 0. For each inverse problems structure of the input-output mappings is analyzed based on maximum principle and corresponding adjoint problems. Derived integral identities between the solutions of forward problems and corresponding adjoint problems, permit one to prove the monotonicity and invertibility of the input-output mappings. Some numerical applications are presented. (c) 2007 Elsevier Inc. All rights reserved.