Geodesic
Error estimation in linear inverse problems with prior information
Numerical methods and programming, Tome 13 (2012) no. 1, pp. 14-18 Cet article a éte moissonné depuis la source Math-Net.Ru

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An inverse problem for an operator equation $Az=u$ is considered. The exact operator $A$ and the exact right-hand side $u$ are unknown. Only their upper and lower estimates are available. A technique of finding upper and lower estimates for the exact solution is proposed under the assumption that this solution is positive and bounded. A posterior error estimate is obtained for approximate solutions. The approximate solutions with an optimal posterior error estimate are discussed. Various prior information on the exact solution is used (for example, its monotonicity and convexity).
Keywords: linear ill-posed problems; error estimation; partially ordered sets. 
@article{VMP_2012_13_1_a1,
     author = {Yu. M. Korolev and A. G. Yagola},
     title = {Error estimation in linear inverse problems with prior information},
     journal = {Numerical methods and programming},
     pages = {14--18},
     year = {2012},
     volume = {13},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2012_13_1_a1/}
}
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Yu. M. Korolev; A. G. Yagola. Error estimation in linear inverse problems with prior information. Numerical methods and programming, Tome 13 (2012) no. 1, pp. 14-18. http://geodesic.mathdoc.fr/item/VMP_2012_13_1_a1/