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2011-11-02
萨金特,在读书时是个逃避数学的人,但后来发现数学的重要性之后,便投入巨大的精力研习数学。甚至在成为教授之后,还去数学系本科和研究生课堂去听课。


在其主页上,他为NYU和斯坦福大学那些有志于研究经济学的学生提出了学习数学课程的建议。


https://files.nyu.edu/ts43/public/math_courses.html




Math courses
The opinions expressed on this page are my own and do not represent the policy or opinions of the economics department. The recommendations here are based primarily on the success of students who have taken the path I describe.  
Math is the language of economics.  If you are an NYU undergraduate, studying math will open doors to you in terms of interesting economics courses at NYU and  job opportunities afterwards.  Start with the basics: take three calculus courses (up to and including multivariable calculus), linear algebra, and a good course in probability and statistics.  These basic courses will empower you.  After you have these under your belt, you have many interesting options all of which will further empower you to learn and practice economics.  I especially recommend courses in (1) Markov chains and stochastic processes, and (2) differential equations.  
Superb economists at NYU (e.g., Adam Brandenburger, Robert Engle, Roy Radner, Stanley Zin, Jess Benhabib, Douglas Gale, Boyan Jovanovic, David Pearce, Debraj Ray,  Ennio Stacchetti, Charles Wilson, and others) have made notable contributions to economics partly because they are creative but also because they studied more math than others.  
The opinions expressed on this page are my own and do not represent the policy or opinions of the economics department. The recommendations here are based primarily on the success of past students who have taken the path I describe.
Math courses for NYU studentsMath courses for Stanford students
These courses listed above are very useful courses for applied work in econometrics, macroeconomic theory, and applied industrial organization. They describe the foundations of methods used to specify and estimate dynamic competitive models.
Just as in jogging, I recommend not overdoing it. Rather, find a pace that you can sustain throughout your years here. You will find that taking these courses doesn't really cost time, because of your improved efficiency in doing economics.
There are many other courses that are interesting and useful. The most important thing is just to get started acquiring the tools and habits these courses will convey.

————————————————————————
Math courses for Stanford students
Distinguished Stanford graduates such as David Kreps and Darrell Duffie contributed important new ideas in economics from the beginning of their careers partly because they are creative and partly because they were extraordinarily well equipped in mathematical and statistical tools.
Math Department
  • Math 103, 104, Linear algebra
  • Math 113, 114 Linear algebra and matrix theory
  • Math 106, Introduction to functions of a complex variable (especially useful for econometrics and time series analysis)
  • Math 124, Introduction to stochastic processes
  • Math 130, Ordinary differential equations
  • Math 103, 104, Linear algebra
  • Math 131, Partial differential equations
  • Math 175, Functional analysis
  • Math 205A, B, C, Real analysis and functional analysis
  • Math 230A, B, C, Theory of Probability
  • Math 236, Introduction to stochastic differential equations
Engineering Economic Systems and Operations Research
  • EESOR 313, Vector Space Optimization. This course is taught from `the Bible' by the author (Luenberger). The book is wonderful and widely cited by economists
  • EESOR 322, Stochastic calculus and control
Statistics
  • Stat 215-217, Stochastic processes (Cover)
  • Stat 218, Modern Markov chains (Diaconis)
  • Stat 310 A, B, Theory of probability (Dembo)
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2011-11-2 02:38:28
Math courses for NYU students  (纽约大学学生可以修习的数学课程)

Undergraduate - Courant (数学系本科课程)

V63.0121 Calculus I   (微积分 1)
Derivatives, antiderivatives, and integrals of functions of one real variable. Trigonometric, inverse trigonometric, logarithmic and exponential functions. Applications, including graphing, maximizing and minimizing functions. Areas and volumes.

V63.0122 Calculus II   (微积分 2)

Techniques of integration. Further applications. Plane analytic geometry. Polar coordinates and parametric equations. Infinite series, including power series.

V63.0123 Calculus III  (微积分 3)
Functions of several variables. Vectors in the plane and space. Partial derivatives with applications, especially Lagrange multipliers. Double and triple integrals. Spherical and cylindrical coordinates. Surface and line integrals. Divergence, gradient, and curl. Theorem of Gauss and Stokes.

V63.0140 Linear Algebra (线性代数)
Systems of linear equations, Gaussian elimination, matrices, determinants, Cramer’s rule. Vectors, vector spaces, basis and dimension, linear transformations. Eigenvalues, eigenvectors, and quadratic forms.      
   
V63.0141 Honors Linear Algebra I - identical to G63.2110    (优等生线性代数 1)
Linear spaces, subspaces, and quotient spaces; linear dependence and independence; basis and dimensions. Linear transformation and matrices; dual spaces and transposition. Solving linear equations. Determinants. Quadratic forms and their relation to local extrema of multivariable functions.

V63.0142 Honors Linear Algebra II - identical to G63.2120  (优等生线性代数 2)

V63.0233 Theory of Probability  (概率论)
An introduction to the mathematical treatment of random phenomena occurring in the natural, physical, and social sciences. Axioms of mathematical probability, combinatorial analysis, binomial distribution, Poisson and normal approximation, random variables and probability distributions, generating functions, Markov chains applications.

V63.0234 Mathematical Statistics   (数理统计)

An introduction to the mathematical foundations and techniques of modern statistical analysis for the interpretation of data in the quantitative sciences. Mathematical theory of sampling; normal populations and distributions; chi-square, t, and F distributions; hypothesis testing; estimation; confidence intervals; sequential analysis; correlation, regression; analysis of variance. Applications to the sciences.

V63.0250 Mathematics of Finance  (数理金融)
Introduction to the mathematics of finance. Topics include: Linear programming with application pricing and quadratic. Interest rates and present value. Basic probability: random walks, central limit theorem, Brownian motion, lognormal model of stock prices. Black-Scholes theory of options. Dynamic programming with application to portfolio optimization.


V63.0252 Numerical Analysis   (数值分析)
In numerical analysis one explores how mathematical problems can be analyzed and solved with a computer. As such, numerical analysis has very broad applications in mathematics, physics, engineering, finance, and the life sciences. This course gives an introduction to this subject for mathematics majors. Theory and practical examples using Matlab will be combined to study a range of topics ranging from simple root-finding procedures to differential equations and the finite element method.

V63.0262 Ordinary Differential Equations  (常微分方程)
First and second order equations. Series solutions. Laplace transforms. Introduction to partial differential equations and Fourier series.

V63.0263 Partial Differential Equations  (偏微分方程)
Many laws of physics are formulated as partial differential equations. This course discusses the simplest examples, such as waves, diffusion, gravity, and static electricity. Non-linear conservation laws and the theory of shock waves are discussed. Further applications to physics, chemistry, biology, and population dynamics.

V63.0282 Functions of a Complex Variable  (复变函数)
Complex numbers and complex functions. Differentiation and the Cauchy-Riemann equations. Cauchy’s theorem and the Cauchy integral formula. Singularities, residues, and Laurent series. Fractional Linear transformations and conformal mapping. Analytic continuation. Applications to fluid flow etc.

V63.0325 Analysis I     (数学分析 1)
The real number system. Convergence of sequences and series. Rigorous study of functions of one real variable: continuity, connectedness, compactness, metric spaces, power series, uniform convergence and continuity.

V63.0326 Analysis II    (数学分析 2)
Functions of several variables. Limits and continuity. Partial derivatives. The implicit function theorem. Transformation of multiple integrals. The Riemann integral and its extensions.

V63.0375 Topology (optional)   (拓扑学)
Set-theoretic preliminaries. Metric spaces, topological spaces, compactness, connectedness, covering spaces, and homotopy groups.

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2011-11-2 02:39:06

Graduate - Courant
G63.1410.001, 1420.001 INTRODUCTION TO MATHEMATICAL ANALYSIS I, II
Fall term
Functions of one variable: rigorous treatment of limits and continuity. Derivatives. Riemann integral. Taylor series. Convergence of infinite series and integrals. Absolute and uniform convergence. Infinite series of functions. Fourier series.
Spring term
Functions of several variables and their derivatives. Topology of Euclidean spaces. The implicit function theorem, optimization and Lagrange multipliers. Line integrals, multiple integrals, theorems of Gauss, Stokes, and Green.
G63.2450.001, 2460.001 COMPLEX VARIABLES I, II
Fall Term
Complex numbers; analytic functions, Cauchy-Riemann equations; linear fractional transformations; construction and geometry of the elementary functions; Green's theorem, Cauchy's theorem; Jordan curve theorem, Cauchy's formula; Taylor's theorem, Laurent expansion; analytic continuation; isolated singularities, Liouville's theorem; Abel's convergence theorem and the Poisson integral formula.
Text: Introduction to Complex Variables and Applications, Brown & Churchill
Spring Term
The fundamental theorem of algebra, the argument principle; calculus of residues, Fourier transform; the Gamma and Zeta functions, product expansions; Schwarz principle of reflection and Schwarz-Christoffel transformation; elliptic functions, Riemann surfaces; conformal mapping and univalent functions; maximum principle and Schwarz's lemma; the Riemann mapping theorem.}
Text: Complex Analysis, Alfors
G63.2470.001 ORDINARY DIFFERENTIAL EQUATIONS
Existence theorem: finite differences; power series. Uniqueness. Linear systems: stability, resonance. Linearized systems: behavior in the neighborhood of fixed points. Linear systems with periodic coefficients. Linear analytic equations in the complex domain: Bessel and hypergeometric equations.
Recommended text: Ordinary Differential Equations, Coddington & Levinson
G63.2490.001 PARTIAL DIFFERENTIAL EQUATIONS (one-term format)
Basic constant-coefficient linear examples: Laplace's equation, the heat equation, and the wave equation, analyzed from many viewpoints including solution formulas, maximum principles, and energy inequalities. Key nonlinear examples such as scalar conservation laws, Hamilton-Jacobi equations, and semilinear elliptic equations, analyzed using appropriate tools including the method of characteristics, variational principles, and viscosity solutions. Simple numerical schemes: finite differences and finite elements. Important PDE from mathematical physics, including the Euler and Navier-Stokes equations for incompressible flow.
Suggested texts: Partial Differential Equations, Paul R. Garabedian, AMS; Partial Differential Equations, L. C. Evans, AMS; Partial Differential Equations, Fritz John, Springer
G63.2550.001 FUNCTIONAL ANALYSIS
The course will concentrate on concrete aspects of the subject and on the spaces most commonly used in practice such as Lp(1? p ? ?), C, C?, and their duals. Working knowledge of Lebesgue measure and integral is expected. Special attention to Hilbert space (L2, Hardy spaces, Sobolev spaces, etc.), to the general spectral theorem there, and to its application to ordinary and partial differential equations. Fourier series and integrals in that setting. Compact operators and Fredholm determinants with an application or two. Introduction to measure/volume in infinite-dimensional spaces (Brownian motion). Some indications about non-linear analysis in an infinite-dimensional setting. General theme: How does ordinary linear algebra and calculus extend to d=? dimensions?
Mandatory text: Functional Analysis, P. Lax, (Pure & Applied Mathematics, New York), Wiley-Interscience, John Wiley & Sons, 2002
Rec. text: Methods of Modern Mathematical physics Vol. I: Functional Analysis, M. Reed & B. Simon, Academic Press, New York-London, 1972
G63.2012.002 ADVANCED TOPICS IN NUMERICAL ANALYSIS (Numerical Methods with Probability)
A continuation of Numerical Methods I, introducing statistical and scientific applications of numerical linear algebra (including randomized algorithms), digital signal processing (including stochastic processes), spectral and adaptive schemes for numerical integration, Monte-Carlo techniques (including Metropolis' and Hastings'), the enhancement of accuracy via postprocessing, and other fundamentals. The focus is on basic methods for solving problems encountered frequently in modern science and technology.
Cross-listed as G22.2945.002
G63.2902.001 STOCHASTIC CALCULUS
Review of basic probability and useful tools. Bernoulli trials and random walk. Law of large numbers and central limit theorem. Conditional expectation and martingales. Brownian motion and its simplest properties. Diffusion in general: forward and backward Kolmogorov equations, stochastic differential equations and the Ito calculus. Feynman-Kac and Cameron-Martin Formulas. Applications as time permits.
Text: Stochastic Calculus, A Practical Introduction, Richard Durrett, CRC Press, Probability & Stochastics Series
G63.2911.001, 2912.001 PROBABILITY: LIMIT THEOREMS I, II
Newman, (fall);  H. McKean (spring).
Fall term
Probability, independence, laws of large numbers, limit theorems including the central limit theorem. Markov chains (discrete time). Martingales, Doob inequality, and martingale convergence theorems. Ergodic theorem.
Spring term
Independent increment processes, including Poisson processes and Brownian motion. Markov chains (continuous time). Stochastic differential equations and diffusions, Markov processes, semigroups,
generators and connection with partial differential equations.
Spring text: Stochastic Processes, S. R. S. Varadhan, CIMS - AMS, 2007
G63.2931.001 ADVANCED TOPICS IN PROBABILITY (Markov Processes and Diffusions).
In the first part of the course, we will give an introduction to the general theory of Markov processes for both discrete and continuous time. Our main focus will be the study of their long-time behavior (transience, recurrence, ergodicity, mixing) in the classical context of Harris chains, but also for a larger class of processes that doesn't fit into this context. The second part of the course will be aimed at applying the abstract results from the first part to the more concrete framework of elliptic diffusion processes. Lyapunov function techniques will play a prominent role in this part of the course. The final part of the course will be an introduction to the theory of hypoelliptic diffusion processes. We will give a short introduction to Mallivain calculus and use it to give a probabilistic proof of Hörmander's famous "sums of squares" theorem.
Recommended texts: Markov Chains and Stochastic Stability, Meyn and Tweedie (available online at http://www.probability.ca/MT/); Introduction to the Theory of Diffusion Processes, Krylov; The Malliavin Calculus and Related Topics, Nualart
G63.2932.001 ADVANCED TOPICS IN PROBABILITY (Large Deviations and Applications)
Varadhan
Prerequisites: Probability: Limit Theorems I and II; familiarity with some Markov Processes, Brownian motion, SDE, diffusions.
Standard Cramer Theory for sums of iid random variables, Ventcel Freidlin theory for ordinary differential equations with small noise and the exit problem. Donsker-Varadhan theory of large time behavior of Markov Processes. Applications to interacting particle systems.
Recommended Texts on Large Deviations: Dembo & Zeitouni, Deuschel & Stroock, Weiss & Schwartz
Graduate - Computational Biology
G36.2011 Advanced Topics in Numerical Analysis: High Performance Scientific Computing.
Topics: Serial and parallel performance tuning, parallel programing in MPI and OpenMP.

Graduate - GSAS
G63.2044 Monte Carlo Methods and Simulation of Physical Systems
Principles of Monte Carlo: sampling methods and statistics, importance sampling and variance reduction, Markov chains and the Metropolis algorithm. Advanced topics such as acceleration strategies, data analysis, and quantum Monte Carlo and the fermion problem.
G63.2830, 2840 Advanced Topics in Applied Mathematics
Recent topics: mathematical models of crystal growth; math adventures in data mining; ice dymamics; vortex dynamics; applied stochastic analysis; developments in statistical learning; fluctuation dissipation theorems and climate change; theory and modeling of rare events.   
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2011-11-2 02:46:16
Superb economists at NYU (e.g., Adam Brandenburger, Robert Engle, Roy Radner, Stanley Zin, Jess Benhabib, Douglas Gale, Boyan Jovanovic, David Pearce, Debraj Ray,  Ennio Stacchetti, Charles Wilson, and others) have made notable contributions to economics partly because they are creative but also because they studied more math than others.  


___  萨金特指出,纽约大学的那些超级经济学家(比如Adam Brandenburger, Robert Engle, Roy Radner, Stanley Zin, Jess Benhabib, Douglas Gale, Boyan Jovanovic, David Pearce, Debraj Ray,  Ennio Stacchetti, Charles Wilson等人)对经济学作出了重要的贡献,部分原因在于他们是具有创造性的人,同时也是因为他们学习的数学比其他人要多。
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2011-11-2 03:09:58
Graduate - Courant (纽约大学数学系研究生课程)

G63.1410.001, 1420.001 INTRODUCTION TO MATHEMATICAL ANALYSIS I, II



G63.2450.001, 2460.001 COMPLEX VARIABLES I, II

G63.2470.001 ORDINARY DIFFERENTIAL EQUATIONS


G63.2490.001 PARTIAL DIFFERENTIAL EQUATIONS (one-term format)


G63.2550.001 FUNCTIONAL ANALYSIS
/

G63.2012.002 ADVANCED TOPICS IN NUMERICAL ANALYSIS (Numerical Methods with Probability)

G63.2902.001 STOCHASTIC CALCULUS

Text: Stochastic Calculus, A Practical Introduction, Richard Durrett, CRC Press, Probability & Stochastics Series

G63.2911.001, 2912.001 PROBABILITY: LIMIT THEOREMS I, II
Newman, (fall);  H. McKean (spring).
.
Spring text: Stochastic Processes, S. R. S. Varadhan, CIMS - AMS, 2007


G63.2931.001 ADVANCED TOPICS IN PROBABILITY (Markov Processes and Diffusions)

G63.2932.001 ADVANCED TOPICS IN PROBABILITY (Large Deviations and Applications)


Graduate - Computational Biology   (计算生物专业研究生课程)

G36.2011 Advanced Topics in Numerical Analysis: High Performance Scientific Computing.
Topics: Serial and parallel performance tuning, parallel programing in MPI and OpenMP.

Graduate - GSAS  (文理学院研究生课程)

G63.2044 Monte Carlo Methods and Simulation of Physical Systems

G63.2830, 2840 Advanced Topics in Applied Mathematics

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2011-11-2 09:12:25
这哥们太牛了!!!
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