Research Interests: Discrete and Combinatorial Geometry

Born in October 1971 in Julu County, Hebei Province; Master of Science; Associate Professor at the School of Mathematical Sciences, Hebei Normal University. She was admitted to the Department of Mathematics of Hebei Normal University in 1990, obtained her Bachelor of Science degree in 1994, and in the same year was recommended for admission to a Master's program at the university without examination, obtaining her Master of Science degree in 1997. After graduation, she remained at the university to teach and has done so ever since. She has successively served as Teaching Assistant, Lecturer, and Associate Professor at the School of Mathematical Sciences, Hebei Normal University. She has presided over and been a principal participant in more than ten natural science foundation projects at the bureau, provincial/ministerial, and national levels, has presided over several university-level research projects and teaching reform projects, and has published more than ten papers in important professional academic journals at home and abroad.

Education:

(1) 1994-09 to 1997-06, Hebei Normal University, Fundamental Mathematics, Master's

(2) 1990-09 to 1994-06, Hebei Normal University, Mathematics, Bachelor's

Work Experience:

(1) 2014-12 to present, Hebei Normal University, School of Mathematical Sciences, Associate Professor

(2) 2000-08 to 2014-11, Hebei Normal University, School of Mathematical Sciences, Lecturer

(3) 1997-07 to 2000-07, Hebei Normal University, School of Mathematical Sciences, Teaching Assistant

Teaching:

She has lectured on courses including Combinatorics, Discrete Mathematics, Appreciation of Graph Theory, Advanced Mathematics, Linear Algebra, Probability Theory and Mathematical Statistics, Analytic Geometry, and Elementary Number Theory.

Research Projects Presided Over and Participated In:

(1) Natural Science Foundation of Hebei Province, General Program, A2021205008, Packing, Isoperimetric Inequalities, and Heilbronn-Type Problems in Combinatorial Geometry, 2021-01-01 to 2023-12-31, Participant

(2) Natural Science Foundation of Hebei Province, General Program, A2021773324, Universal Covering, Tiling, and Distance Problems in Discrete and Combinatorial Geometry, 2016-01-01 to 2018-12-31, Participant

(3) National Natural Science Foundation of China, General Program, 11471095, Research on Triangulation, Convexity Problems, and Properties Related to Archimedean Tilings, 2014-08-25 to 2018-12-31, Participant

(4) Natural Science Foundation of Hebei Province, General Program, A2013205089, Covering, Packing, and Triangulation of Convex Bodies, 2013-05-03 to 2015-12-31, Participant

(5) Science and Technology Project of the Hebei Provincial Department of Education, Young Scientists Fund, 2011175, Research on the Number of Distinct Distances and Isosceles Set Problems for Finite Point Sets, 2011-08-16 to 2014-12-31, Participant

(6) National Natural Science Foundation of China, General Program, 11071055, Research on Acute Triangulation of Polyhedra and Its Algorithms, 2010-08-18 to 2013-12-31, Participant

(7) Science and Technology Project of the Hebei Provincial Department of Education, Youth Program, Z2008117, Characterization of Face Vectors of Convex Polytopes and Related Problems, 2008-07-24 to 2010-12-31, Principal Investigator

(8) National Natural Science Foundation of China, General Program, 10701033, Acute Triangulation and F-Convexity, 2008-01-01 to 2010-12-31, Participant

(9) Natural Science Foundation of Hebei Province, General Program, A2007000226, Acute Triangulation and Its Algorithms, 2007-03-20 to 2009-12-31, Participant

(10) National Natural Science Foundation of China, General Program, 10571042, Several Typical Problems in Combinatorial and Discrete Geometry, 2005-09-22 to 2008-12-31, Participant

(11) Natural Science Foundation of Hebei Province, General Program, A2005000144, Tiling and Partition Problems, 2005-03-04 to 2007-12-31, Participant

(12) Natural Science Foundation of Hebei Province, General Program, 199174, Metrics of Lattice Polytopes and Finite Tilings of Polygons, 1999-01-01 to 2001-12-31, Participant

Academic Papers:

[1] Li Yingzi, Ding Ren. Arrangements of Semicircles on S1. Advances in Mathematics (China). 1997, 26(5): 471-473.

[2] Li Yingzi, Yang Ge, Meng Zhaojing. Construction Methods for Arrangements of Open Semicircles. Journal of Hebei Normal University. 2006, 30(3): 253-255.

[3] Li Yingzi, Yang Ge, Meng Zhaojing. The Number of Arrangements of Open Semicircles. Journal of Hebei University. 2006, 26(5): 460-462, 468.

[4] Li Yingzi, Li Jianguo. The Weight of Edges in Arrangements of Open Semicircles. Journal of Hebei Normal University. 2002, 26(4): 345-348.

[5] Li Yingzi, Yang Ge, Gao Chunxue. A Note on the Malfatti Problem. Journal of Hebei University of Technology. 2006, 35(3): 34-35.

[6] Chang Zhikui, Li Yingzi (corresponding author). The Number of D-Points on a Line in Tilings. Journal of Mathematics. 2013, 33(2): 359-362.

[7] Ding Ren, Li Yingzi, Xu Changqing. A Note on Hausdorff Distance. Journal of Mathematical Research & Exposition. 2000, 20(4): 511-514.

[8] Ren Ding, Yingzi Li, Changqing Xu and Liping Yuan. Some Combinatorial Results about Face-lattices of Four-dimensional Convex Polytopes. Romanian Journal of Pure and Applied Mathematics. 2005, 50(5-6): 585-593.

[9] Ding Ren, Xu Changqing, Li Yingzi. A Note on City Block Distance. Applied Mathematics-A Journal of Chinese Universities. 1998, 13(3): 331-334.

[10] Xu Changqing, Zhang Gengsheng, Li Yingzi. Necessary and Sufficient Conditions for Partial Geometries to Satisfy the Pasch Axiom. Journal of Hebei Normal University. 1997, 21(2): 135-136.

[11] Yang Ge, Li Yingzi. Strong Converse Inequality for Modified Baskakov-Type Operators. Journal of Hebei Normal University. 2004, 28(5): 448-451.

[12] Yang Ge, Li Yingzi. On the Converse Theorem for Szász-Durrmeyer Operators. Journal of Shijiazhuang Railway Institute. 2007, 20(1): 69-71.