Iwaniec, Tadeusz; Onninen, Jani Triangulation of diffeomorphisms. (English) Zbl 1380.41009 Math. Ann. 368, No. 3-4, 1133-1169 (2017). Reviewer: Marja Kankaanrinta (Helsinki) MSC: 41A45 57R05 PDFBibTeX XMLCite \textit{T. Iwaniec} and \textit{J. Onninen}, Math. Ann. 368, No. 3--4, 1133--1169 (2017; Zbl 1380.41009) Full Text: DOI
Hencl, Stanislav; Vejnar, Benjamin Sobolev homeomorphism that cannot be approximated by diffeomorphisms in \(W^{1,1}\). (English) Zbl 1395.46027 Arch. Ration. Mech. Anal. 219, No. 1, 183-202 (2016). MSC: 46E35 41A63 49N60 PDFBibTeX XMLCite \textit{S. Hencl} and \textit{B. Vejnar}, Arch. Ration. Mech. Anal. 219, No. 1, 183--202 (2016; Zbl 1395.46027) Full Text: DOI
Ubhaya, Vasant A. \(L_ p\)-approximation from nonconvex subsets of special classes of functions. (English) Zbl 0684.41016 J. Approximation Theory 57, No. 2, 223-238 (1989). Reviewer: N.Nashed MSC: 41A50 PDFBibTeX XMLCite \textit{V. A. Ubhaya}, J. Approx. Theory 57, No. 2, 223--238 (1989; Zbl 0684.41016) Full Text: DOI