On stability of classes of Lipschitz mappings generated by compact sets of linear mappings.
Stability in the -norm and -norm of classes of Lipschitz functions of one variable.
On a generalization of the Darboux theorem to the multidimensional case.
A generalization of the Lagrange mean value theorem to the case of vector-valued mappings.
An example of a -smooth function whose gradient range is an arc with no tangent at any point.
Properties of -smooth mappings with one-dimensional gradient range.
An analog of Sard's theorem for -smooth functions of two variables.
Necessary and sufficient conditions for unique determination of plane domains.
Properties of the -smooth functions with nowhere dense gradient range.
Stability of classes of affine mappings.
Necessary and sufficient conditions for a curve to be the gradient range of a -smooth function.
Stability in the Cauchy and Morera theorems for holomorphic functions and their spatial analogs.
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