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Letter to the editor. (Russian, English) Zbl 1042.35044
Sib. Mat. Zh. 43, No. 2, 482 (2002); translation in Sib. Math. J. 43, No. 2, 388 (2002).
The author points out certain inaccuracies in his papers [Sib. Math. J. 34, No. 5, 972-983 (1993; Zbl 0814.76074), ibid. 34, No. 6, 1171-1179 (1993; Zbl 0808.76079)], ibid. 36, No. 4, 807-815 (1995; Zbl 0854.35083)], and ibid. 38, No. 5, 1028-1037 (1997; Zbl 0938.35119)] and corrects them: the reader should either consider only domains with connected boundaries or slightly change the class of test functions.
35Q30 Navier-Stokes equations
76D05 Navier-Stokes equations for incompressible viscous fluids
35J85 Unilateral problems; variational inequalities (elliptic type) (MSC2000)
49K20 Optimality conditions for problems involving partial differential equations
35B50 Maximum principles in context of PDEs
76M30 Variational methods applied to problems in fluid mechanics
49J20 Existence theories for optimal control problems involving partial differential equations
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