Ji, Hongwei; Sun, Jingxian; Cui, Yujun Existence of sign-changing solutions for boundary value problems of uniformly elliptic operators. (Chinese. English summary) Zbl 1463.35229 Math. Pract. Theory 50, No. 6, 212-218 (2020). MSC: 35J25 PDFBibTeX XMLCite \textit{H. Ji} et al., Math. Pract. Theory 50, No. 6, 212--218 (2020; Zbl 1463.35229)
Ji, Hongwei; Sun, Jingxian; Cui, Yujun Existence of sign-changing solutions for a class of second-order nonlinear \(m\)-point boundary value problem. (Chinese. English summary) Zbl 1424.34080 Math. Pract. Theory 48, No. 18, 223-228 (2018). MSC: 34B10 34B15 47N20 PDFBibTeX XMLCite \textit{H. Ji} et al., Math. Pract. Theory 48, No. 18, 223--228 (2018; Zbl 1424.34080)
Ji, Hongwei; Sun, Jingxian Research on the existence of sign-changing solutions of nonlinear operator equations in abstract space. (Chinese. English summary) Zbl 1389.47144 Math. Pract. Theory 47, No. 2, 257-263 (2017). MSC: 47J05 34G20 PDFBibTeX XMLCite \textit{H. Ji} and \textit{J. Sun}, Math. Pract. Theory 47, No. 2, 257--263 (2017; Zbl 1389.47144)
Wang, Feng; Sun, Jingxian; Cui, Yujun A zero point theorem about superlinear operators and applications. (Chinese. English summary) Zbl 1299.47117 Adv. Math., Beijing 42, No. 3, 355-362 (2013). MSC: 47H11 34B18 PDFBibTeX XMLCite \textit{F. Wang} et al., Adv. Math., Beijing 42, No. 3, 355--362 (2013; Zbl 1299.47117)
Li, Hongyu; Sun, Jingxian; Sun, Fei Positive solutions to boundary value problems of a system of differential equations. (Chinese. English summary) Zbl 1274.34064 Chin. Ann. Math., Ser. A 33, No. 3, 329-340 (2012). MSC: 34B18 34B15 47N20 PDFBibTeX XMLCite \textit{H. Li} et al., Chin. Ann. Math., Ser. A 33, No. 3, 329--340 (2012; Zbl 1274.34064)
Sun, Jingxian; Xu, Xian Positive solutions of non-positone nonlinear operator equations and their applications. (Chinese. English summary) Zbl 1257.47064 Acta Math. Sin., Chin. Ser. 55, No. 1, 55-64 (2012). MSC: 47J05 47H11 34B15 PDFBibTeX XMLCite \textit{J. Sun} and \textit{X. Xu}, Acta Math. Sin., Chin. Ser. 55, No. 1, 55--64 (2012; Zbl 1257.47064)
Wang, Feng; Sun, Jingxian; Cui, Yujun Continuation theorems in cones and their applications. (Chinese. English summary) Zbl 1265.34065 Chin. Ann. Math., Ser. A 32, No. 6, 737-744 (2011). MSC: 34B15 47H11 47N20 PDFBibTeX XMLCite \textit{F. Wang} et al., Chin. Ann. Math., Ser. A 32, No. 6, 737--744 (2011; Zbl 1265.34065)
Wang, Feng; Sun, Jingxian; Cui, Yujun Computation for zero point index and applications to the second order periodic boundary value problem. (Chinese. English summary) Zbl 1260.47057 J. Syst. Sci. Math. Sci. 31, No. 8, 975-984 (2011). MSC: 47H11 34B15 PDFBibTeX XMLCite \textit{F. Wang} et al., J. Syst. Sci. Math. Sci. 31, No. 8, 975--984 (2011; Zbl 1260.47057)
Li, Lai; Sun, Jingxian; Zhao, Lühuizi The solutions of a class of Hammerstein-type integral equations. (Chinese. English summary) Zbl 1249.45019 J. Sichuan Norm. Univ., Nat. Sci. 34, No. 5, 646-650 (2011). MSC: 45N05 45H05 47H10 45G10 47H30 47H11 PDFBibTeX XMLCite \textit{L. Li} et al., J. Sichuan Norm. Univ., Nat. Sci. 34, No. 5, 646--650 (2011; Zbl 1249.45019) Full Text: DOI
Cui, Yujun; Sun, Jingxian Positive solutions for second-order three-point boundary value problems in a Banach space. (Chinese. English summary) Zbl 1249.34068 Acta Math. Appl. Sin. 34, No. 4, 743-751 (2011). MSC: 34B18 34B10 34G20 PDFBibTeX XMLCite \textit{Y. Cui} and \textit{J. Sun}, Acta Math. Appl. Sin. 34, No. 4, 743--751 (2011; Zbl 1249.34068)
Zhao, Lühuizi; Sun, Jingxian Fixed point theorems of Rothe and Altman type convex-power 1-set-contraction operators in Banach spaces. (Chinese. English summary) Zbl 1247.47027 J. Shandong Univ., Nat. Sci. 46, No. 4, 49-52 (2011). MSC: 47H08 47H10 PDFBibTeX XMLCite \textit{L. Zhao} and \textit{J. Sun}, J. Shandong Univ., Nat. Sci. 46, No. 4, 49--52 (2011; Zbl 1247.47027)
Liu, Xiaoying; Sun, Jingxian Bifurcation points and global structure of positive eigenvalues for cone mappings with no differentiability at the zero point. (Chinese. English summary) Zbl 1230.47087 J. Syst. Sci. Math. Sci. 30, No. 8, 1111-1118 (2010). MSC: 47J15 35J25 47N20 35B09 35J66 PDFBibTeX XMLCite \textit{X. Liu} and \textit{J. Sun}, J. Syst. Sci. Math. Sci. 30, No. 8, 1111--1118 (2010; Zbl 1230.47087)
Wang, Feng; Sun, Jingxian; Cui, Yujun Positive solutions of a class of operator equations \(Lx=Nx\). (Chinese. English summary) Zbl 1219.47097 Acta Math. Sci., Ser. A, Chin. Ed. 30, No. 1, 278-288 (2010). MSC: 47J05 34B15 PDFBibTeX XMLCite \textit{F. Wang} et al., Acta Math. Sci., Ser. A, Chin. Ed. 30, No. 1, 278--288 (2010; Zbl 1219.47097)
Li, Hongyu; Sun, Jingxian; Cui, Yujun Positive solutions of superlinear nonlinear Sturm-Liouville boundary value problems. (Chinese. English summary) Zbl 1224.34065 Chin. Ann. Math., Ser. A 31, No. 2, 183-188 (2010). MSC: 34B18 34B24 47N20 PDFBibTeX XMLCite \textit{H. Li} et al., Chin. Ann. Math., Ser. A 31, No. 2, 183--188 (2010; Zbl 1224.34065)
Li, Hongyu; Sun, Jingxian Positive solutions for singular boundary value problems of a coupled system of second order ordinary differential equations. (Chinese. English summary) Zbl 1224.34064 Acta Anal. Funct. Appl. 12, No. 1, 21-26 (2010). MSC: 34B18 34B16 47N20 PDFBibTeX XMLCite \textit{H. Li} and \textit{J. Sun}, Acta Anal. Funct. Appl. 12, No. 1, 21--26 (2010; Zbl 1224.34064) Full Text: DOI
Sun, Jingxian; Liu, Xiaoying Computation of fixed point index for no-cone mappings and its applications. (Chinese. English summary) Zbl 1219.47090 Acta Math. Sin., Chin. Ser. 53, No. 3, 417-428 (2010). MSC: 47H11 47N20 35J60 PDFBibTeX XMLCite \textit{J. Sun} and \textit{X. Liu}, Acta Math. Sin., Chin. Ser. 53, No. 3, 417--428 (2010; Zbl 1219.47090)
Li, Hongyu; Sun, Jingxian; Cui, Yujun Positive solutions of nonlinear differential equations on a measure chain. (Chinese. English summary) Zbl 1199.34098 Chin. Ann. Math., Ser. A 30, No. 1, 97-106 (2009). MSC: 34B18 34N05 34B15 47N20 PDFBibTeX XMLCite \textit{H. Li} et al., Chin. Ann. Math., Ser. A 30, No. 1, 97--106 (2009; Zbl 1199.34098)
Cui, Yujun; Sun, Jingxian Solutions of nonlinear Sturm-Liouville problems in a Banach space. (Chinese. English summary) Zbl 1199.34133 J. Syst. Sci. Math. Sci. 29, No. 2, 208-214 (2009). MSC: 34B24 34L15 47N20 PDFBibTeX XMLCite \textit{Y. Cui} and \textit{J. Sun}, J. Syst. Sci. Math. Sci. 29, No. 2, 208--214 (2009; Zbl 1199.34133)
Li, Hongyu; Sun, Jingxian; Cui, Yujun Existence of positive solutions for double Hammerstein type integral equations. (Chinese. English summary) Zbl 1174.45309 Chin. J. Eng. Math. 25, No. 5, 931-934 (2008). MSC: 45M20 45G10 PDFBibTeX XMLCite \textit{H. Li} et al., Chin. J. Eng. Math. 25, No. 5, 931--934 (2008; Zbl 1174.45309)
Zhang, Guowei; Sun, Jingxian; Zhang, Tie Fixed point theorem of domain compression and expansion of convex functional type. (Chinese. English summary) Zbl 1174.47047 Acta Math. Sin., Chin. Ser. 51, No. 3, 517-522 (2008). MSC: 47H10 47H11 PDFBibTeX XMLCite \textit{G. Zhang} et al., Acta Math. Sin., Chin. Ser. 51, No. 3, 517--522 (2008; Zbl 1174.47047)
Sun, Jingxian; Li, Hongyu Global structure of positive solutions of singular nonlinear Sturm-Liouville problems. (Chinese. English summary) Zbl 1174.34028 Acta Math. Sci., Ser. A, Chin. Ed. 28, No. 3, 424-433 (2008). MSC: 34B24 34B15 34B18 34B16 47N20 PDFBibTeX XMLCite \textit{J. Sun} and \textit{H. Li}, Acta Math. Sci., Ser. A, Chin. Ed. 28, No. 3, 424--433 (2008; Zbl 1174.34028)
Zhang, Xiaoyan; Sun, Jingxian Minimal and maximal mild solutions of semilinear evolution equations in Banach spaces. (Chinese. English summary) Zbl 1174.34454 J. Shandong Univ., Nat. Sci. 42, No. 10, 18-21 (2007). MSC: 34G20 34A12 47D60 47N20 PDFBibTeX XMLCite \textit{X. Zhang} and \textit{J. Sun}, J. Shandong Univ., Nat. Sci. 42, No. 10, 18--21 (2007; Zbl 1174.34454)
Zhang, Kemei; Sun, Jingxian Four kinds of solutions for asymptotically linear operator equations and its applications. (Chinese. English summary) Zbl 1142.47351 Acta Math. Sin., Chin. Ser. 50, No. 6, 1405-1410 (2007). MSC: 47J05 47H10 47H11 47N20 PDFBibTeX XMLCite \textit{K. Zhang} and \textit{J. Sun}, Acta Math. Sin., Chin. Ser. 50, No. 6, 1405--1410 (2007; Zbl 1142.47351)
Zhang, Guowei; Sun, Jingxian Positive solutions of singular \((k, n-k)\) multi-point boundary value problems. (Chinese. English summary) Zbl 1124.34311 Acta Math. Sin., Chin. Ser. 49, No. 2, 391-398 (2006). MSC: 34B10 34B15 34B16 34B18 PDFBibTeX XMLCite \textit{G. Zhang} and \textit{J. Sun}, Acta Math. Sin., Chin. Ser. 49, No. 2, 391--398 (2006; Zbl 1124.34311)
Zhang, Guowei; Sun, Jingxian Eigenvalue criteria for the existence of positive solutions to nonlinear \((k,n-k)\) conjugate boundary value problems. (Chinese. English summary) Zbl 1122.34308 Acta Math. Sci., Ser. A, Chin. Ed. 26, No. 6, 889-896 (2006). MSC: 34B18 34B15 34B16 PDFBibTeX XMLCite \textit{G. Zhang} and \textit{J. Sun}, Acta Math. Sci., Ser. A, Chin. Ed. 26, No. 6, 889--896 (2006; Zbl 1122.34308)
Zhang, Jinqing; Sun, Jingxian Maximal element theorems for the process of stochastic choice under the quasi-semiorder. (Chinese. English summary) Zbl 1152.91417 Math. Appl. 19, No. 4, 765-770 (2006). MSC: 91B08 PDFBibTeX XMLCite \textit{J. Zhang} and \textit{J. Sun}, Math. Appl. 19, No. 4, 765--770 (2006; Zbl 1152.91417)
Sun, Yongzheng; Sun, Jingxian Positive solutions of singular \((k,n-k)\) conjugate boundary value problems. (Chinese. English summary) Zbl 1113.34319 J. Qufu Norm. Univ., Nat. Sci. 32, No. 2, 9-12 (2006). MSC: 34B18 34B15 PDFBibTeX XMLCite \textit{Y. Sun} and \textit{J. Sun}, J. Qufu Norm. Univ., Nat. Sci. 32, No. 2, 9--12 (2006; Zbl 1113.34319)
Zhang, Xiaoyan; Sun, Jingxian Existence of multiple solutions for the one-dimensional singular \(p\)-Laplacian equations. (Chinese. English summary) Zbl 1105.34303 Acta Math. Sci., Ser. A, Chin. Ed. 26, No. 1, 143-149 (2006). MSC: 34B16 34B15 PDFBibTeX XMLCite \textit{X. Zhang} and \textit{J. Sun}, Acta Math. Sci., Ser. A, Chin. Ed. 26, No. 1, 143--149 (2006; Zbl 1105.34303)
Sun, jing Xian; Zhang, Guo Wei Positive solutions of singular nonlinear Sturm-Liouville problems. (Chinese. English summary) Zbl 1124.34323 Acta Math. Sin. 48, No. 6, 1095-1104 (2005). MSC: 34B18 34B15 34B16 47N20 PDFBibTeX XMLCite \textit{j. X. Sun} and \textit{G. W. Zhang}, Acta Math. Sin. 48, No. 6, 1095--1104 (2005; Zbl 1124.34323)
Sun, Jing Xian; Zhang, Xiao Yan The fixed point theorem of convex-power condensing operator and applications to abstract semilinear evolution equations. (Chinese. English summary) Zbl 1124.34342 Acta Math. Sin. 48, No. 3, 439-446 (2005). MSC: 34G20 47H09 47H10 47N20 PDFBibTeX XMLCite \textit{J. X. Sun} and \textit{X. Y. Zhang}, Acta Math. Sin. 48, No. 3, 439--446 (2005; Zbl 1124.34342)
Zhang, Kemei; Sun, Jingxian Multiple solutions for superlinear operator equations in Banach spaces and applications. (Chinese. English summary) Zbl 1117.47304 Acta Math. Sin. 48, No. 1, 99-108 (2005). MSC: 47J05 34B15 47H10 47N20 PDFBibTeX XMLCite \textit{K. Zhang} and \textit{J. Sun}, Acta Math. Sin. 48, No. 1, 99--108 (2005; Zbl 1117.47304)
Sun, Yongzheng; Sun, Jingxian Existence and uniqueness of solutions for a class of periodic boundary value problems. (Chinese. English summary) Zbl 1110.34304 J. Xuzhou Norm. Univ., Nat. Sci. 23, No. 4, 28-31 (2005). MSC: 34B15 34C25 PDFBibTeX XMLCite \textit{Y. Sun} and \textit{J. Sun}, J. Xuzhou Norm. Univ., Nat. Sci. 23, No. 4, 28--31 (2005; Zbl 1110.34304)
Zhang, Xiaoyan; Sun, Jingxian Existence and uniqueness of solutions for a class of nonlinear operator equations and its applications. (Chinese. English summary) Zbl 1280.47061 Acta Math. Sci., Ser. A, Chin. Ed. 25, No. 6, 846-851 (2005). MSC: 47J05 47H07 47N20 45J05 PDFBibTeX XMLCite \textit{X. Zhang} and \textit{J. Sun}, Acta Math. Sci., Ser. A, Chin. Ed. 25, No. 6, 846--851 (2005; Zbl 1280.47061)
Zhang, Jinqing; Sun, Jingxian The iterative technique of fixed points for increasing operators and applications to nonlinear integral equations. (Chinese. English summary) Zbl 1102.47049 Math. Appl. 18, No. 1, 128-135 (2005). Reviewer: Zhilin Yang (Qingdao) MSC: 47H10 47J25 45N05 47H07 47N20 PDFBibTeX XMLCite \textit{J. Zhang} and \textit{J. Sun}, Math. Appl. 18, No. 1, 128--135 (2005; Zbl 1102.47049)
Zhang, Xiao-yan; Sun, Jing-xian; Su, Jun Periodic boundary value problems of nonlinear second order integro-differential equations in Banach spaces. (Chinese. English summary) Zbl 1063.45504 Chin. J. Eng. Math. 21, No. 6, 1044 (2004). MSC: 45N05 45J05 45L05 45G10 PDFBibTeX XMLCite \textit{X.-y. Zhang} et al., Chin. J. Eng. Math. 21, No. 6, 1044 (2004; Zbl 1063.45504)
Zhang, Guowei; Sun, Jingxian A necessary and sufficient condition for the existence of positive solutions of a class of singular boundary value problems for higher-order differential equations. (Chinese. English summary) Zbl 1068.34021 Acta Anal. Funct. Appl. 6, No. 3, 250-255 (2004). MSC: 34B16 34B18 34B15 PDFBibTeX XMLCite \textit{G. Zhang} and \textit{J. Sun}, Acta Anal. Funct. Appl. 6, No. 3, 250--255 (2004; Zbl 1068.34021)
Zhang, Kemei; Sun, Jingxian Existence of sign-changing solutions for nonlinear operator equations and its applications. (Chinese. English summary) Zbl 1078.47503 Acta Math. Sin. 46, No. 4, 815-822 (2003). MSC: 47J05 34B15 34B24 47N20 PDFBibTeX XMLCite \textit{K. Zhang} and \textit{J. Sun}, Acta Math. Sin. 46, No. 4, 815--822 (2003; Zbl 1078.47503)
Li, Zhilong; Sun, Jingxian Remark on Amann theorem. (Chinese. English summary) Zbl 1039.47033 J. Shandong Univ., Nat. Sci. 38, No. 1, 20-22 (2003). Reviewer: Ya-ping Fang (Chengdu) MSC: 47H09 47H10 37C25 47H11 PDFBibTeX XMLCite \textit{Z. Li} and \textit{J. Sun}, J. Shandong Univ., Nat. Sci. 38, No. 1, 20--22 (2003; Zbl 1039.47033)
Sun, Jingxian Retract and computation for topological degree. (Chinese. English summary) Zbl 1055.47054 J. Xuzhou Norm. Univ., Nat. Sci. 21, No. 1, 1-4 (2003). MSC: 47H11 55M25 PDFBibTeX XMLCite \textit{J. Sun}, J. Xuzhou Norm. Univ., Nat. Sci. 21, No. 1, 1--4 (2003; Zbl 1055.47054)
Zheng, Xiongjun; Sun, Jingxian Some fixed point theorems of increasing operators in semi-ordered linear space. (Chinese. English summary) Zbl 1047.47042 J. Jiangxi Norm. Univ., Nat. Sci. Ed. 27, No. 2, 122-124 (2003). Reviewer: Ya-Ping Fang (Chengdu) MSC: 47H10 47H07 PDFBibTeX XMLCite \textit{X. Zheng} and \textit{J. Sun}, J. Jiangxi Norm. Univ., Nat. Sci. Ed. 27, No. 2, 122--124 (2003; Zbl 1047.47042)
Zhang, Kemei; Sun, Jingxian The existence of positive solutions for a class of Hammerstein nonlinear integral equations. (Chinese. English summary) Zbl 1039.45005 J. Shandong Univ., Nat. Sci. 37, No. 3, 207-209 (2002). MSC: 45G10 45M20 PDFBibTeX XMLCite \textit{K. Zhang} and \textit{J. Sun}, J. Shandong Univ., Nat. Sci. 37, No. 3, 207--209 (2002; Zbl 1039.45005)
Zhang, Xiaoyan; Sun, Jingxian Solutions of nonlinear second order impulsive integro-differential equations of mixed type in Banach spaces. (Chinese. English summary) Zbl 1052.45010 J. Syst. Sci. Math. Sci. 22, No. 4, 428-438 (2002). MSC: 45N05 45J05 45G10 47H09 PDFBibTeX XMLCite \textit{X. Zhang} and \textit{J. Sun}, J. Syst. Sci. Math. Sci. 22, No. 4, 428--438 (2002; Zbl 1052.45010)
Sun, Jingxian Solutions of nonlinear operator equations in a Hilbert space. (Chinese. English summary) Zbl 1051.47045 J. Jiangxi Norm. Univ., Nat. Sci. Ed. 26, No. 1, 1-3 (2002). Reviewer: Shihuang Hong (Haikou) MSC: 47J05 46E20 47S30 PDFBibTeX XMLCite \textit{J. Sun}, J. Jiangxi Norm. Univ., Nat. Sci. Ed. 26, No. 1, 1--3 (2002; Zbl 1051.47045)
Zhang, Jinqing; Sun, Jingxian A fixed point theorem for discontinuous increasing operators and its application. (Chinese. English summary) Zbl 0983.47039 Acta Math. Appl. Sin. 24, No. 1, 34-43 (2001). MSC: 47H10 47G20 45N05 47H07 PDFBibTeX XMLCite \textit{J. Zhang} and \textit{J. Sun}, Acta Math. Appl. Sin. 24, No. 1, 34--43 (2001; Zbl 0983.47039)
Yang, Zhilin; Sun, Jingxian Asymptotic bifurcation points of nonlinear operators. (Chinese. English summary) Zbl 0952.47049 J. Syst. Sci. Math. Sci. 20, No. 1, 47-54 (2000). MSC: 47J15 47H11 PDFBibTeX XMLCite \textit{Z. Yang} and \textit{J. Sun}, J. Syst. Sci. Math. Sci. 20, No. 1, 47--54 (2000; Zbl 0952.47049)
Chen, Fangqi; Sun, Jingxian Fixed point of monotone \(m\)-weakly condensing operator. (Chinese. English summary) Zbl 0917.47051 J. Shandong Univ., Nat. Sci. Ed. 33, No. 2, 128-132 (1998). MSC: 47H10 47H09 PDFBibTeX XMLCite \textit{F. Chen} and \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 33, No. 2, 128--132 (1998; Zbl 0917.47051)
Liu, Lishan; Sun, Jingxian The solvability of nonlinear integro-differential equations of mixed type in Banach spaces. (Chinese. English summary) Zbl 0898.45016 J. Syst. Sci. Math. Sci. 16, No. 3, 253-259 (1996). MSC: 45N05 45J05 45G10 47H09 PDFBibTeX XMLCite \textit{L. Liu} and \textit{J. Sun}, J. Syst. Sci. Math. Sci. 16, No. 3, 253--259 (1996; Zbl 0898.45016)
Liu, Xiaoying; Sun, Jingxian Computation of the topological degree and applications to superlinear system of equations. (Chinese. English summary) Zbl 0897.47050 J. Syst. Sci. Math. Sci. 16, No. 1, 51-59 (1996). MSC: 47H11 PDFBibTeX XMLCite \textit{X. Liu} and \textit{J. Sun}, J. Syst. Sci. Math. Sci. 16, No. 1, 51--59 (1996; Zbl 0897.47050)
Sun, Jingxian; Liu, Zhaoli Calculus of variations and super- and sub-solutions in reverse order. (Chinese. English summary) Zbl 0810.47059 Acta Math. Sin. 37, No. 4, 512-514 (1994). MSC: 47J20 49J40 35J25 PDFBibTeX XMLCite \textit{J. Sun} and \textit{Z. Liu}, Acta Math. Sin. 37, No. 4, 512--514 (1994; Zbl 0810.47059)
Sun, Jingxian; Liu, Zhaoli A fixed point theorem for \(k\)-set-contractions of the type of two-point extension. (Chinese. English summary) Zbl 0790.47036 J. Shandong Univ., Nat. Sci. Ed. 28, No. 1, 27-29 (1993). MSC: 47H10 47H07 PDFBibTeX XMLCite \textit{J. Sun} and \textit{Z. Liu}, J. Shandong Univ., Nat. Sci. Ed. 28, No. 1, 27--29 (1993; Zbl 0790.47036)
Sun, Jingxian; Liu, Lishan Monotone iterative method of integro-differential equations of mixed type in Banach spaces. (Chinese. English summary) Zbl 0777.65077 J. Syst. Sci. Math. Sci. 13, No. 2, 160-166 (1993). MSC: 65R20 45G10 45J05 45N05 PDFBibTeX XMLCite \textit{J. Sun} and \textit{L. Liu}, J. Syst. Sci. Math. Sci. 13, No. 2, 160--166 (1993; Zbl 0777.65077)
Sun, Jingxian; Liu, Zhaoli Acute-angle principles for nonlinear operators with the lack of continuity. (Chinese. English summary) Zbl 0768.47030 J. Shandong Univ., Nat. Sci. Ed. 27, No. 4, 415-418 (1992). MSC: 47J05 PDFBibTeX XMLCite \textit{J. Sun} and \textit{Z. Liu}, J. Shandong Univ., Nat. Sci. Ed. 27, No. 4, 415--418 (1992; Zbl 0768.47030)
Sun, Jingxian Iterative technique for a class of nonlinear operator equations. (Chinese. English summary) Zbl 0769.47020 J. Shandong Univ., Nat. Sci. Ed. 27, No. 3, 251-255 (1992). MSC: 47J05 47H07 65J15 47H09 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 27, No. 3, 251--255 (1992; Zbl 0769.47020)
Sun, Jingxian; Zhao, Zengqin Solutions of integro-differential equations with discontinuous terms. (Chinese. English summary) Zbl 0768.45004 Appl. Math., J. Chin. Univ. 7, No. 4, 558-567 (1992). Reviewer: Wang Cun-Zheng (Chengdu) MSC: 45J05 45G10 PDFBibTeX XMLCite \textit{J. Sun} and \textit{Z. Zhao}, Appl. Math., J. Chin. Univ. 7, No. 4, 558--567 (1992; Zbl 0768.45004)
Sun, Jingxian A generalization of Caristi’s fixed-point theorem. (Chinese. English summary) Zbl 0958.54045 Chin. Q. J. Math. 7, No. 1, 72-75 (1992). MSC: 54H25 47H10 PDFBibTeX XMLCite \textit{J. Sun}, Chin. Q. J. Math. 7, No. 1, 72--75 (1992; Zbl 0958.54045)
Sun, Jingxian Fixed point theorems of two-point extension type and applications. (Chinese. English summary) Zbl 0795.47035 J. Syst. Sci. Math. Sci. 12, No. 3, 284-286 (1992). MSC: 47H07 47H10 34B24 PDFBibTeX XMLCite \textit{J. Sun}, J. Syst. Sci. Math. Sci. 12, No. 3, 284--286 (1992; Zbl 0795.47035)
Sun, Jingxian; Zhao, Zengqin Properties of abstract Nemytskij operators. (Chinese. English summary) Zbl 0756.47054 J. Qufu Norm. Univ., Nat. Sci. 18, No. 2, 14-16 (1992). MSC: 47H30 PDFBibTeX XMLCite \textit{J. Sun} and \textit{Z. Zhao}, J. Qufu Norm. Univ., Nat. Sci. 18, No. 2, 14--16 (1992; Zbl 0756.47054)
Sun, Jingxian; Liu, Lishan Existence and uniqueness of solution for a class of nonincreasing operator equations. (Chinese. English summary) Zbl 0772.47030 J. Qufu Norm. Univ., Nat. Sci. 18, No. 2, 9-13 (1992). MSC: 47H07 47J05 PDFBibTeX XMLCite \textit{J. Sun} and \textit{L. Liu}, J. Qufu Norm. Univ., Nat. Sci. 18, No. 2, 9--13 (1992; Zbl 0772.47030)
Sun, Jingxian On Pareto extremum problem. (Chinese. English summary) Zbl 0890.46004 Math. Appl. 5, No. 3, 27-30 (1992). MSC: 46A40 46A50 PDFBibTeX XMLCite \textit{J. Sun}, Math. Appl. 5, No. 3, 27--30 (1992; Zbl 0890.46004)
Sun, Jingxian Maximal and minimal solutions of nonlinear integral equations. (Chinese. English summary) Zbl 0742.45002 J. Shandong Univ., Nat. Sci. Ed. 26, No. 3, 295-299 (1991). Reviewer: Lu Jian-Ke (Wuhan) MSC: 45G10 34A34 34B15 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 26, No. 3, 295--299 (1991; Zbl 0742.45002)
Sun, Jingxian Fixed point theorems of increasing operators and applications to nonlinear equations with discontinuous nonlinearities in Banach spaces. (Chinese) Zbl 0759.47031 Acta Math. Sin. 34, No. 5, 665-674 (1991). Reviewer: Xu Chengxian (Xian) MSC: 47H10 47H07 PDFBibTeX XMLCite \textit{J. Sun}, Acta Math. Sin. 34, No. 5, 665--674 (1991; Zbl 0759.47031)
Sun, Jingxian Some new criteria of compactness in Banach spaces and applications. (Chinese) Zbl 0823.46021 Chin. Ann. Math., Ser. A 11, No. 4, 407-412 (1990). MSC: 46B20 46B40 46A50 PDFBibTeX XMLCite \textit{J. Sun}, Chin. Ann. Math., Ser. A 11, No. 4, 407--412 (1990; Zbl 0823.46021)
Sun, Jingxian Solutions of ordinary differential equations in Banach spaces. (Chinese) Zbl 0719.34107 Acta Math. Sin. 33, No. 3, 374-380 (1990). Reviewer: Ge Weigao (Beijing) MSC: 34G10 34A12 34B05 PDFBibTeX XMLCite \textit{J. Sun}, Acta Math. Sin. 33, No. 3, 374--380 (1990; Zbl 0719.34107)
Sun, Jingxian Generalizations of the general principle on ordered sets in nonlinear functional analysis. (Chinese. English summary) Zbl 0705.47049 J. Syst. Sci. Math. Sci. 10, No. 3, 228-232 (1990). MSC: 47H10 47H07 PDFBibTeX XMLCite \textit{J. Sun}, J. Syst. Sci. Math. Sci. 10, No. 3, 228--232 (1990; Zbl 0705.47049)
Sun, Jingxian A question about nonlinear functional. (Chinese. English summary) Zbl 0752.47031 J. Math. Res. Expo. 10, No. 4, 559-563 (1990). MSC: 47J05 46G05 58E05 PDFBibTeX XMLCite \textit{J. Sun}, J. Math. Res. Expo. 10, No. 4, 559--563 (1990; Zbl 0752.47031)
Sun, Jingxian Fixed point theorems for a class of nonlinear operators. (Chinese. English summary) Zbl 0736.47030 J. Shandong Univ., Nat. Sci. Ed. 25, No. 4, 424-427 (1990). MSC: 47H10 47H11 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 25, No. 4, 424--427 (1990; Zbl 0736.47030)
Sun, Jingxian The computation of topological degree for the inversion operator. (Chinese. English summary) Zbl 0714.47042 J. Shandong Univ., Nat. Sci. Ed. 24, No. 2, 1-5 (1989). MSC: 47H11 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 24, No. 2, 1--5 (1989; Zbl 0714.47042)
Sun, Jingxian Fixed points and generalized fixed points for increasing operators. (Chinese) Zbl 0687.47042 Acta Math. Sin. 32, No. 4, 457-463 (1989). Reviewer: Y.Ling MSC: 47H10 47H05 PDFBibTeX XMLCite \textit{J. Sun}, Acta Math. Sin. 32, No. 4, 457--463 (1989; Zbl 0687.47042)
Sun, Jingxian The global structure of the set of characteristic vectors for superlinear operators. (Chinese) Zbl 0706.47033 Chin. Ann. Math., Ser. A 9, No. 3, 257-262 (1988). Reviewer: Li Shaokuan MSC: 47H09 47J10 PDFBibTeX XMLCite \textit{J. Sun}, Chin. Ann. Math., Ser. A 9, No. 3, 257--262 (1988; Zbl 0706.47033)
Sun, Jingxian The existence of positive solutions for nonlinear Hammerstein integral equations and applications. (Chinese) Zbl 0699.45005 Chin. Ann. Math., Ser. A 9, No. 1, 90-98 (1988). Reviewer: Wang Cun-Zheng MSC: 45G10 34L99 PDFBibTeX XMLCite \textit{J. Sun}, Chin. Ann. Math., Ser. A 9, No. 1, 90--98 (1988; Zbl 0699.45005)
Sun, Jingxian Fixed point theorems of non-continuous increasing operators and applications to nonlinear equations with discontinuous nonlinearities. (Chinese) Zbl 0689.47020 Acta Math. Sin. 31, No. 1, 101-107 (1988). Reviewer: Hu Shoudman MSC: 47H10 PDFBibTeX XMLCite \textit{J. Sun}, Acta Math. Sin. 31, No. 1, 101--107 (1988; Zbl 0689.47020)
Guo, Dajun; Sun, Jingxian Evaluation of topological degree and applications. (Chinese) Zbl 0687.47047 J. Math. Res. Expo. 8, No. 3, 469-480 (1988). Reviewer: Y.Ling MSC: 47J05 47H10 55M25 58C40 58E07 PDFBibTeX XMLCite \textit{D. Guo} and \textit{J. Sun}, J. Math. Res. Expo. 8, No. 3, 469--480 (1988; Zbl 0687.47047)
Sun, Jingxian The computation of topological degree and applications to nonlinear operators. (Chinese. English summary) Zbl 0681.47033 J. Shandong Univ., Nat. Sci. Ed. 23, No. 2, 1-6 (1988). MSC: 47J05 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 23, No. 2, 1--6 (1988; Zbl 0681.47033)
Sun, Jingxian A problem on successive approximations of operator equations. (Chinese. English summary) Zbl 0667.65046 Numer. Math., Nanjing 10, No. 1, 82-87 (1988). Reviewer: Sun Yongsheng MSC: 65J15 47H10 47J25 47H07 PDFBibTeX XMLCite \textit{J. Sun}, Numer. Math., Nanjing 10, No. 1, 82--87 (1988; Zbl 0667.65046)
Sun, Jingxian Some fixed point theorems for increasing operators. (Chinese. English summary) Zbl 0666.47036 Northeast. Math. J. 3, No. 2, 191-198 (1987). MSC: 47H10 47H07 PDFBibTeX XMLCite \textit{J. Sun}, Northeast. Math. J. 3, No. 2, 191--198 (1987; Zbl 0666.47036)
Sun, Jingxian Some problems on cone theory and increasing maps. (Chinese. English summary) Zbl 0639.47049 J. Shandong Univ., Nat. Sci. Ed. 22, No. 2, 35-40 (1987). MSC: 47H10 47H07 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 22, No. 2, 35--40 (1987; Zbl 0639.47049)
Sun, Jingxian A theorem in point set topology. (Chinese. English summary) Zbl 0633.54013 J. Syst. Sci. Math. Sci. 7, 148-150 (1987). Reviewer: J.H.Tian MSC: 54D99 PDFBibTeX XMLCite \textit{J. Sun}, J. Syst. Sci. Math. Sci. 7, 148--150 (1987; Zbl 0633.54013)
Sun, Jingxian Global generalizations of the Birkhoff-Kellogg theorem on nonlinear operators. (Chinese) Zbl 0633.47038 Acta Math. Sin. 30, No. 2, 264-267 (1987). Reviewer: Ling Yongxiang MSC: 47J10 58C40 PDFBibTeX XMLCite \textit{J. Sun}, Acta Math. Sin. 30, No. 2, 264--267 (1987; Zbl 0633.47038)
Sun, Jingxian Nontrivial solutions of superlinear Hammerstein integral equations and applications. (Chinese. English summary) Zbl 0633.45006 Chin. Ann. Math., Ser. A 7, 528-535 (1986). Reviewer: Hu Shouchuan MSC: 45G10 47H07 PDFBibTeX XMLCite \textit{J. Sun}, Chin. Ann. Math., Ser. A 7, 528--535 (1986; Zbl 0633.45006)
Sun, Jingxian Computation of topological degree and applications to nonlinear operators. (Chinese) Zbl 0625.47046 Acta Math. Sin. 28, 347-359 (1985). Reviewer: Ding Guangui MSC: 47J10 47J05 47E05 47Gxx 45G10 PDFBibTeX XMLCite \textit{J. Sun}, Acta Math. Sin. 28, 347--359 (1985; Zbl 0625.47046)
Sun, Jingxian Three solution theorems and acute angle principle for nonlinear operator equations. (Chinese. English summary) Zbl 0599.47104 J. Shandong Univ., Nat. Sci. Ed. 1984, No. 4, 11-18 (1984). MSC: 47J05 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 1984, No. 4, 11--18 (1984; Zbl 0599.47104)
Sun, Jingxian Weakly topological degree for nonlinear operators. I. (Chinese. English summary) Zbl 0599.47103 J. Shandong Univ., Nat. Sci. Ed. 1984, 1-6 (1984). MSC: 47J05 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 1984, 1--6 (1984; Zbl 0599.47103)
Sun, Jingxian A note on the eigenvalues of nonlinear Hammerstein integral equations. (Chinese. English summary) Zbl 0552.45006 J. Math. Res. Expo. 4, No. 1, 51-53 (1984). MSC: 45G10 45C05 47J10 PDFBibTeX XMLCite \textit{J. Sun}, J. Math. Res. Expo. 4, No. 1, 51--53 (1984; Zbl 0552.45006)
Sun, Jingxian Eigenvalues of a class of Hammerstein nonlinear integral equation with variable sign kernel. (Chinese. English summary) Zbl 0595.45007 J. Shandong Univ., Nat. Sci. Ed. 1983, No. 1, 34-40 (1983). MSC: 45G10 45C05 PDFBibTeX XMLCite \textit{J. Sun}, J. Shandong Univ., Nat. Sci. Ed. 1983, No. 1, 34--40 (1983; Zbl 0595.45007)