Bousquet, Pierre; Csató, Gyula The equation \(\operatorname{div}u+\langle a,u\rangle=f\). (English) Zbl 1441.35102 Commun. Contemp. Math. 22, No. 4, Article ID 1950035, 23 p. (2020). MSC: 35F15 35B65 PDFBibTeX XMLCite \textit{P. Bousquet} and \textit{G. Csató}, Commun. Contemp. Math. 22, No. 4, Article ID 1950035, 23 p. (2020; Zbl 1441.35102) Full Text: DOI arXiv
Chen, Yanping; Deng, Qingquan; Ding, Yong Commutators with fractional differentiation for second-order elliptic operators on \(\mathbb{R}^n\). (English) Zbl 1440.42051 Commun. Contemp. Math. 22, No. 2, Article ID 1950010, 29 p. (2020). MSC: 42B20 42B25 42B37 46E35 PDFBibTeX XMLCite \textit{Y. Chen} et al., Commun. Contemp. Math. 22, No. 2, Article ID 1950010, 29 p. (2020; Zbl 1440.42051) Full Text: DOI