Du, Guangwei; Han, Junqiang; Niu, Pengcheng Interior regularity for degenerate equations with drift on homogeneous groups. (English) Zbl 1418.35350 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 113, No. 2, 587-604 (2019). MSC: 35R03 35B65 35C15 PDFBibTeX XMLCite \textit{G. Du} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 113, No. 2, 587--604 (2019; Zbl 1418.35350) Full Text: DOI
Wu, Leyun; Niu, Pengcheng Harnack inequalities for weighted subelliptic \(p\)-Laplace equations constructed by Hörmander vector fields. (English) Zbl 1399.35146 Math. Rep., Buchar. 19(69), No. 3, 313-337 (2017). MSC: 35H20 35B05 35J70 PDFBibTeX XMLCite \textit{L. Wu} and \textit{P. Niu}, Math. Rep., Buchar. 19(69), No. 3, 313--337 (2017; Zbl 1399.35146)
Dong, Yan; Niu, Pengcheng Estimates in Morrey spaces and Hölder continuity for weak solutions to degenerate elliptic systems. (English) Zbl 1253.35052 Manuscr. Math. 138, No. 3-4, 419-437 (2012). Reviewer: Fabio Paronetto (Padova) MSC: 35J48 35J70 35D30 PDFBibTeX XMLCite \textit{Y. Dong} and \textit{P. Niu}, Manuscr. Math. 138, No. 3--4, 419--437 (2012; Zbl 1253.35052) Full Text: DOI
Cui, Xuewe; Niu, Pengcheng; Wang, Yongzhong Hölder continuity of weak solutions for degenerate quasilinear subelliptic systems with different weights. (English) Zbl 1237.35027 Commun. Contemp. Math. 14, No. 2, 1250011, 19 p. (2012). Reviewer: Vincenzo Vespri (Firenze) MSC: 35B65 35D30 35H20 35J70 PDFBibTeX XMLCite \textit{X. Cui} et al., Commun. Contemp. Math. 14, No. 2, 1250011, 19 p. (2012; Zbl 1237.35027) Full Text: DOI
Wang, Yongzhong; Niu, Pengcheng; Cui, Xuewei Harnack estimates for a quasi-linear parabolic equation with a singular weight. (English) Zbl 1228.35075 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 17, 6265-6286 (2011). Reviewer: Vincenzo Vespri (Firenze) MSC: 35B45 35K65 35K59 35B65 PDFBibTeX XMLCite \textit{Y. Wang} et al., Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 17, 6265--6286 (2011; Zbl 1228.35075) Full Text: DOI
Cui, Xuewei; Niu, Pengcheng Hölder continuity of weak solutions for degenerate quasilinear elliptic equations with different weights. (Chinese. English summary) Zbl 1488.35236 Sci. Sin., Math. 40, No. 7, 683-692 (2010). MSC: 35J62 35J70 35D30 35B65 PDFBibTeX XMLCite \textit{X. Cui} and \textit{P. Niu}, Sci. Sin., Math. 40, No. 7, 683--692 (2010; Zbl 1488.35236)
Wang, Jialin; Niu, Pengcheng; Cui, Xuewei \(L^{p}\) estimates for weak solutions to nonlinear sub-elliptic systems related to Hörmander’s vector fields. (English) Zbl 1182.35059 Kyushu J. Math. 63, No. 2, 301-314 (2009). Reviewer: Marco Biroli (Milano) MSC: 35B45 35H20 35B65 PDFBibTeX XMLCite \textit{J. Wang} et al., Kyushu J. Math. 63, No. 2, 301--314 (2009; Zbl 1182.35059) Full Text: DOI