Yingfei Yi, Ph.D
Contact
Professor, Faculty of Science  Mathematics & Statistical Sciences
 yingfei@ualberta.ca
 Phone
 (780) 4920215
 Address

501 Central Academic Building
11324  89 Ave NWEdmonton ABT6G 2G1
Overview
Research
My research focuses on Dynamical Systems and Differential Equations, concerning both theoretical developments and applications. Areas I have been working on include Stochastic Differential Equations, FokkerPlanck Equations, Hamiltonian Systems, KAM Theory, Topological Dynamics, Ergodic Theory, Nonautomatics Systems, SkewProduct Flows, Singular Perturbations, Mathematical Biology, Bifurcations, Invariant Manifolds Theory, Elliptic Equations, Parabolic Equations, Solitary Equations, and Variational Method. Publication
Announcements
Courses
MATH 334  Ordinary Differential Equations
First order equations, linear equations of higher order. Power series solution. Laplace transform methods. Introduction to special functions. Introduction to linear systems. Prerequisites: One of MATH 102, 125 or 127, and one of MATH 209, 214 or 217. Note: Credit can be obtained in at most one of MATH 201, MATH 334, MATH 336, or MA PH 251.
MATH 524  Ordinary Differential Equations IIA
Existence theorems, uniqueness theorems; linear systems (basic theory); stability (basic theory); nonlinear systems (local theory); nonlinear systems (global theory); bifurcations. Prerequisite: MATH 334 or 336, or equivalent.
Scholarly Activities
Research  CoChair, Executive Committee
Research  CoEditorinChief
Research  Editor
Research  Editor
Differential and Integral Equations
Research  Handling Editor
Research  Member, Executive Committee
Featured Publications
Y. Li and Y. Yi
Comm. Pure Appl. Math.. 2016 January; To appear
M. Li, W. Liu, C. Shan, and Y. Yi
SIAM J. Appl. Math.. 2016 January; 76 (2):663687
C. Mou and Y. Yi
Comm. Math. Phys.. 2015 January; 340
W. Huang, M. Ji, Z. Liu, and Y. Yi
Ann. Probab.. 2015 January; 43 (4):17121730
Z. Liang, J. Yan, and Y. Yi
Ergod. Th. Dynam. Sys.. 2014 January; 34
Y. Han, Y. Li, Y. Li
Ann. Henri Poincare. 2010 January; 10 (8):14191436
W. Huang and Y. Yi
J. Funct. Anal.. 2009 January; 257 (3):832902
J. Geng, J. Viveros, and Y. Yi
Physica D. 2008 January; 237
W. Huang and Y. Yi
Israel J. Math.. 2007 January; 161
Y. Li and Y. Li
Trans. Amer. Math. Soc.. 2005 January; 357
Y. Li and Y. Li
Math. Annalen. 2003 January; 326
S.N. Chow, C. Li, and Y. Yi
Ergod. Th. Dynam. Sys.. 2002 January; 22
S.N. Chow, W. Liu, and Y. Yi
Trans. Amer. Math. Soc.. 2000 January; 352 (11):51795211
W. Shen and Y. Yi
Memoirs Amer. Math. Soc.. 1998 January; 136 (647):193
W. Shen and Y. Yi
Trans. Amer. Math. Soc.. 1995 January; 347 (11):44134431