RT Journal Article ID 06206f626b6fca9f A1 Yagubov, Mamed Akhverdy ogly A1 Asadova, Natavan Shukyur kyzy T1 On Relation between Sets of Solutions of the Main and Extended Problems for Control Problems in Elliptic Equations JF Journal of Automation and Information Sciences JO JAI(S) YR 2010 FD 2010-08-11 VO 42 IS 7 SP 43 OP 53 K1 optimal control K1 equations of elliptic type of high order K1 extended problem K1 relation between sets of solutions K1 theorem of existence of optimal control AB For the problem of optimal control for processes, described by equations of elliptic type of high order, we introduce the extended problem and investigate relation between sets of solutions of the correspondent boundary value problem. Due to this we prove the theorem of existence of optimal control. PB Begell House LK https://www.dl.begellhouse.com/journals/2b6239406278e43e,4113b4204909141f,06206f626b6fca9f.html