Tikhonov Regularized Variable Projection Algorithms for Separable Nonlinear Least Squares Problems by Zhengqing Fu, Lanlan Guo

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Solutions for a Class of Hadamard Fractional Boundary Value Problems with Sign-Changing Nonlinearity by Keyu Zhang, Zhengqing Fu

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Uniqueness of Successive Positive Solution for Nonlocal Singular Higher-Order Fractional Differential Equations Involving Arbitrary Derivatives by Qiuyan Zhong, Xingqiu Zhang, Xinyi Lu, Zhengqing Fu

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Positive Solutions for a System of Neumann Boundary Value Problems of Second-Order Difference Equations Involving Sign-Changing Nonlinearities by Jiqiang Jiang, Johnny Henderson, Jiafa Xu, Zhengqing Fu

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Weighted Semiparameter Model and Its Application by Zhengqing Fu, Guolin Liu, Ke Zhao, Hua Guo

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Positive Solutions for a System of Semipositone Fractional Difference Boundary Value Problems by Cheng Chen, Jiafa Xu, Donal O’Regan, Zhengqing Fu

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Nontrivial Solutions for a Higher Order Nonlinear Fractional Boundary Value Problem Involving Riemann-Liouville Fractional Derivatives by Keyu Zhang, Donal O’Regan, Jiafa Xu, Zhengqing Fu

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An Efficient Algorithm for Ill-Conditioned Separable Nonlinear Least Squares by Jiayan Wang, Lanlan Guo, Zongmin Li, Xueqin Wang, Zhengqing Fu

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Hyers–Ulam–Mittag-Leffler Stability for a System of Fractional Neutral Differential Equations by Manzoor Ahmad, Jiqiang Jiang, Akbar Zada, Zeeshan Ali, Zhengqing Fu, Jiafa Xu

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