Clarke's tangent cones and the boundaries of closed sets in Rn

Generalized gradients and applications

Frank H. Clarke · Transactions of the American Mathematical Society · 1975 · 1.2K citations

Generalized Function, Variational Analysis, Geometric Flow +8

A New Approach to Lagrange Multipliers

Frank H. Clarke · Mathematics of Operations Research · 1976 · 499 citations

Numerical Analysis, Mathematical Programming, Mathematical Programming Problem +15

Generalized Directional Derivatives and Subgradients of Nonconvex Functions

R. T. Rockafellar · Canadian Journal of Mathematics · 1980 · 411 citations · Full text

Engineering, Sub Differential, Generalized Function +12

Tangent Cones, Generalized Gradients and Mathematical Programming in Banach Spaces

Jean-Baptiste Hiriart-Urruty · Mathematics of Operations Research · 1979 · 395 citations

Mathematical Programming, Conic Optimization, Banach Spaces +12

The regularity of free boundaries in higher dimensions

Luis Caffarelli · Acta Mathematica · 1977 · 385 citations · Full text

Coincidence Set, Free Boundaries, Geometric Partial Differential Equation +8