Set-Valued Analysis · 2004 · 183 citations · 28 references
Natural SciencesMathematicsFinite Element AnalysisFinite Element MethodsStochastic ProcessesBoundary ConditionsPartial Differential EquationsRegular SolutionsVariational FormulationVariational InequalitiesWeak FormulationConstrained Variational ProblemsConvex Variational ProblemsNonlinear Variational FormulationNonlinear Variational ProblemsVariational Problems
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The Approximation of One Matrix by Another of Lower Rank
Carl Eckart, Gale Young · Psychometrika · 1936 · 3.8K citations
A New Approach to Lagrange Multipliers
Frank H. Clarke · Mathematics of Operations Research · 1976 · 502 citations
Metric regularity and subdifferential calculus
A. D. Ioffe · Russian Mathematical Surveys · 2000 · 372 citations