Shutyaev, V. P. Some properties of the control operator in the problem of data understanding and some algorithms for its solution. (English. Russian original) Zbl 1030.49500 Differ. Equations 31, No. 12, 2035-2041 (1995); translation from Differ. Uravn. 31, No. 12, 2063-2069 (1995). From the introduction: We study the problem of data assimilation for a linear evolution problem with an unknown initial condition. We study the properties of the control operator and formulate necessary and sufficient conditions for the solvability of the problem. We consider a class of iterative methods for solving the problem, and study conditions for their convergence. Cited in 1 ReviewCited in 1 Document MSC: 49J27 Existence theories for problems in abstract spaces 93C25 Control/observation systems in abstract spaces × Cite Format Result Cite Review PDF