Xu, Jiafa; Goodrich, Christopher S.; Cui, Yujun Positive solutions for a system of first-order discrete fractional boundary value problems with semipositone nonlinearities. (English) Zbl 1417.39030 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 113, No. 2, 1343-1358 (2019). MSC: 39A14 26A33 PDFBibTeX XMLCite \textit{J. Xu} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 113, No. 2, 1343--1358 (2019; Zbl 1417.39030) Full Text: DOI
Cheng, Wei; Xu, Jiafa; Cui, Yujun; Ge, Qi Positive solutions for a class of fractional difference systems with coupled boundary conditions. (English) Zbl 1459.39011 Adv. Difference Equ. 2019, Paper No. 249, 22 p. (2019). MSC: 39A13 39A12 26A33 34B18 PDFBibTeX XMLCite \textit{W. Cheng} et al., Adv. Difference Equ. 2019, Paper No. 249, 22 p. (2019; Zbl 1459.39011) Full Text: DOI
Xu, Jiafa; O’Regan, Donal Existence and uniqueness of solutions for a first-order discrete fractional boundary value problem. (English) Zbl 1401.39008 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 112, No. 4, 1005-1016 (2018). MSC: 39A12 34B18 PDFBibTeX XMLCite \textit{J. Xu} and \textit{D. O'Regan}, Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 112, No. 4, 1005--1016 (2018; Zbl 1401.39008) Full Text: DOI
Xu, Jiafa; O’Regan, Donal; Hou, Chengmin; Cui, Yujun Positive solutions for a class of fractional difference boundary value problems. (English) Zbl 1397.39010 Differ. Equ. Appl. 9, No. 4, 479-493 (2017). MSC: 39A70 34B10 34K37 34B18 34A34 45G15 45M20 PDFBibTeX XMLCite \textit{J. Xu} et al., Differ. Equ. Appl. 9, No. 4, 479--493 (2017; Zbl 1397.39010) Full Text: DOI
Xu, Jiafa; O’Regan, Donal Positive solutions for a second order boundary value problem on time scales. (English) Zbl 1343.34215 J. Appl. Math. Comput. 51, No. 1-2, 127-144 (2016). MSC: 34N05 34B18 47H11 PDFBibTeX XMLCite \textit{J. Xu} and \textit{D. O'Regan}, J. Appl. Math. Comput. 51, No. 1--2, 127--144 (2016; Zbl 1343.34215) Full Text: DOI
Zhang, Keyu; Xu, Jiafa Nontrivial solutions for an impulsive differential equation with non-separated boundary conditions. (English) Zbl 1408.34032 Mediterr. J. Math. 12, No. 3, 717-727 (2015). MSC: 34B15 34B18 34B37 47N20 PDFBibTeX XMLCite \textit{K. Zhang} and \textit{J. Xu}, Mediterr. J. Math. 12, No. 3, 717--727 (2015; Zbl 1408.34032) Full Text: DOI
Dong, Wei; Xu, Jiafa; O’Regan, Donal Solutions for a fractional difference boundary value problem. (English) Zbl 1393.39005 Adv. Difference Equ. 2013, Paper No. 319, 12 p. (2013). MSC: 39A12 26A33 44A55 PDFBibTeX XMLCite \textit{W. Dong} et al., Adv. Difference Equ. 2013, Paper No. 319, 12 p. (2013; Zbl 1393.39005) Full Text: DOI