Dandan Guo, Yongping Liu, Guiqiao Xu (2024). An optimal interpolation problem with Hermite information in the Sobolev class $W^{n}_{1}([-1,1])$. Trudy Instituta Matematiki i Mekhaniki UrO RAN.DOI
XU Guiqiao (2024). Gaussian quadrature formulae are strongly asymptotically optimal for a class of infinitely differentiable functions. Journal of Approximation Theory.DOI
Guiqiao Xu, Yongping Liu, Dandan Guo (2023). A kind of sharp Wirtinger inequalities. International Journal of Wavelets Multiresolution and Information Processing.DOI
Guiqiao Xu (2023). Average case tractability of non-homogeneous tensor product problems with the absolute error criterion. Journal of Complexity.DOI
Guiqiao Xu, Yongping Liu, Dandan Guo (2022). Optimal Birkhoff Interpolation and Birkhoff Numbers in Some Function Spaces. Acta Mathematica Scientia.DOI
Guiqiao Xu, Xiaochen Yu (2022). A note on optimal Hermite interpolation in Sobolev spaces. Journal of Inequalities and Applications.DOI
Guiqiao Xu, Zehong Liu, Hui Wang (2021). Sample Numbers and Optimal Lagrange Interpolation of Sobolev Spaces Wr1. Chinese Annals of Mathematics Series B.DOI
Guiqiao Xu (2020). On the power of standard information for L2 -approximation in the average case setting. Journal of Complexity.DOI
Zehong Liu, Wanting Lu, Guiqiao Xu (2020). Simultaneous approximation of Birkhoff interpolation and the associated sharp inequalities. International Journal of Wavelets Multiresolution and Information Processing.DOI
Yongping Liu, Guiqiao Xu (2019). (S, T)-Weak Tractability of Multivariate Linear Problems in the Average Case Setting. Acta Mathematica Scientia.DOI
Heping Wang, Guiqiao Xu (2019). Sampling numbers of a class of infinitely differentiable functions. Journal of Mathematical Analysis and Applications.DOI
Guiqiao Xu (2019). EC-tractability of Lp -approximation in Korobov spaces with exponential weights. Journal of Approximation Theory.DOI
Anargyros Papageorgiou, Iasonas Petras, Guiqiao Xu, Dong Yanqi (2019). EC- (s,t) -weak tractability of multivariate linear problems in the average case setting. Journal of Complexity.DOI
Guiqiao Xu, Zehong Liu, Wanting Lu (2019). A kind of sharp Wirtinger inequality. Journal of Inequalities and Applications.DOI
Guiqiao Xu, Yong-ping Liu, L. Y. Xiong (2019). Exact Constants for Simultaneous Approximation of Sobolev Classes by Piecewise Hermite Interpolation. Analysis Mathematica.DOI
Guiqiao Xu, Yongping Liu, Jie Zhang (2018). Weighted Integral of Infinitely Differentiable Multivariate Functions is Exponentially Convergent. Numerical Mathematics Theory Methods and Applications.DOI
Yongping Liu, Guiqiao Xu, Jie Zhang (2018). Exponential Convergence of an Approximation Problem for Infinitely Differentiable Multivariate Functions. Mathematical Notes.DOI
Yongping Liu, Wenyan Wu, Guiqiao Xu (2016). The best constants in the Wirtinger inequality. International Journal of Wavelets Multiresolution and Information Processing.DOI
Guiqiao Xu (2014). On weak tractability of the Smolyak algorithm for approximation problems. Journal of Approximation Theory.DOI
Guiqiao Xu, Zheng Zhang (2014). Simultaneous Approximation of Sobolev Classes by Piecewise Cubic Hermite Interpolation. Numerical Mathematics Theory Methods and Applications.DOI
Guiqiao Xu, Xingrui Gao (2014). Average errors for Kantorovitch operators on r-fold integrated Wiener space. International Journal of Wavelets Multiresolution and Information Processing.DOI
Guiqiao Xu (2014). Tractability of linear problems defined over Hilbert spaces. Journal of Complexity.DOI
Guiqiao Xu, Ning Jingrui (2012). The average errors for hermite interpolation on the 1-Fold integrated wiener space. Chinese Annals of Mathematics Series B.DOI
Guiqiao Xu (2012). The Simultaneous Approximation Average Errors for Bernstein Operators on the r -Fold Integrated Wiener Space. Numerical Mathematics Theory Methods and Applications.DOI
Guiqiao Xu (2012). Average error of Hermite interpolation on 1-fold integrated Wiener space. Journal of Tianjin Normal University.
Guiqiao Xu (2012). THE AVERAGE ERROR OF THE NUMERICAL QUADRATURE FORMULA BASED ON THE EQUIDISTANT NODES ON BROWNIAN BRIDGE MEASURE. Journal of Jinggangshan University.
Guiqiao Xu (2012). Average errors for Lagrange interpolation on 1-fold integrated Wiener space. Journal of Tianjin Normal University.
Guiqiao Xu (2012). THE AVERAGE ERRORS OF LAGRANGE INTERPOLATION. Journal of Jinggangshan University.
Guiqiao Xu, DU Yingfang (2010). The average errors for Hermite-Fejér interpolation on the Wiener space. Science China Mathematics.DOI
Guiqiao Xu (2010). The derivative approximation of the third order Hermite interpolation on the weighted L_p norm. Journal of Tianjin Normal University.
刘颖,许贵桥(2009). 拟Grünwald插值算子在Wiener空间下平均误差的估计(英文). Chinese Quarterly Journal of Mathematics.
Guiqiao Xu, RAN CUI, XIN WANG (2009). THE SIMULTANEOUS APPROXIMATION OF QUASI-HERMITE INTERPOLATION ON THE WEIGHTED MEAN NORM. International Journal of Wavelets Multiresolution and Information Processing.DOI
Guiqiao Xu (2009). Rate of Weighted B_(a,φ),Convergence of a Kind of Quasi-Grünwald Interpolatory Operators. Journal of Jishou University.
Guiqiao Xu (2009). The approximation of Hermite interpolation on the weighted L_p norm. Journal of Tianjin Normal University.
刘永平,许贵桥 (2003). WIDTHS AND AVERAGE WIDTHS OF SOBOLEV CLASSES. Acta Mathematica Scientia.
Guiqiao Xu, Chunwu Yu (2003). THE GEL'FAND n -WIDTHS OF MULTIVARIATE PERIODIC BESOV CLASSES. Acta Mathematica Scientia.DOI
Yong-ping Liu, Guiqiao Xu (2002). The Average Widths and Non-linear Widths of the Classes of Multivariate Functions with Bounded Moduli of Smoothness. Acta Mathematicae Applicatae Sinica English Series.DOI
刘永平,许贵桥(2001). 多元多项式样条在Lp(Rd)尺度下的极值性质. 《中国科学:数学》.
许贵桥,刘永平 (2001). The Infinite-dimensional σ-widthsof Besov Classes. 《数学进展》.