Mathematical Economics

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Tips: “Mathematics is the language of economics.”
—— Willard Gibbs

Course Introduction

Course Number:09010200 Credits:2

The teaching content of this course is as follows:

Section Content
1. Introduction & Set Theory
  • Introduction to new course and teaching arrangement
  • Chapter 1: Sets, Sequences and Vector Spaces - §1.1 Sets: Sets, Operations on Sets
2. Sets & Sequences
  • Chapter 1: Sets, Sequences and Vector Spaces - §1.1 Sets: Power sets, Relations, Functions
  • Supremum and infimum of real number sets
  • §1.2 Sequences and Convergence: Sequences
3. Sequences and Convergence
  • §1.2 Sequences and Convergence: Sequences, Convergence
4. Vector Spaces
  • §1.3 Vector Spaces: n-dimensional vectors, Vector operations, Euclidean space
5. Vector Spaces & Consumption-Production
  • §1.3 Vector Spaces: Convex sets and convex functions
  • Chapter 2: Consumption and Production - §2.1 Consumer Behavior: Commodity space and consumption set
6. Consumer & Producer Behavior
  • Flipped Classroom (1): Lexicographic order
  • Chapter 2: Consumption and Production - §2.1 Consumer Behavior: Preferences and utility functions, Budget sets, Demand sets
  • §2.2 Generalized Preferences: Preference relations, Revealed preferences
  • §2.3 Producer Behavior: Production sets, Firm profit, Supply sets and profit functions
7. Production Technology & Linear Programming
  • Convexity of production technology, Law of returns to scale
  • Chapter 3: Linear Programming and Industrial Linkages - §3.1 Linear Programming Method: Linear programming problems
  • §3.2 Input-Output Analysis: Industrial linkage theory, Non-negative matrices
8. Differentiation & Maximum Conditions
  • §4.2 Differentiation: Univariate differentiation, Partial and total differentiation, Differentiation of composite functions under general conditions
  • §4.3 Second-order Differentiation: Slope and Hessian matrix, Definition of second-order differentiation, Properties of convex and concave functions
  • Chapter 5: Maximum Conditions - §5.2 Applications of Maxima in Economics: Marginal productivity, Average cost and marginal cost, Golden rule of economic growth
9. Continuity & Differentiation
  • Chapter 6: Continuity and Differentiation - §4.1 Continuity and Some Topological Concepts: Concept of continuity
10. Differentiation & Maximum Applications
  • §4.2 Differentiation: Univariate differentiation, Partial and total differentiation, Differentiation of composite functions under general conditions
  • §4.3 Second-order Differentiation: Slope and Hessian matrix, Definition of second-order differentiation, Properties of convex and concave functions
  • Chapter 5: Maximum Conditions - §5.2 Applications of Maxima in Economics: Marginal productivity, Average cost and marginal cost, Golden rule of economic growth
11. Economic Growth & Flipped Classroom
  • Golden rule of economic growth (2)
  • Flipped Classroom (2): Monopoly and oligopoly markets
12. Demand Function
  • Chapter 6: Demand and Supply - §6.1 Demand Function: Demand function, Minimum expenditure function, Compensated demand function
13. Slutsky Equation
  • §6.2 Slutsky Equation: Roy's identity, Slutsky equation
14. Utility Maximization
  • Roy's identity, Utility maximization conditions
15. Supply Function & Cost Function
  • §6.3 Supply Function: Production sets and prices, Properties of supply functions (Hotelling's lemma)
  • §6.4 Cost Functions and Factor Demand: Cost minimization
16. Cost Minimization & Review
  • Cost minimization (2) (Shephard's lemma)
  • Review guidance for final examination

Course Resourse

Textbook of Mathematical Economics

Textbook.

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Notes of Mathematical Economics

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Tips of Mathematical Economics

Professor Li Xiaochun is truly a kind and patient scholar. During lectures, he never forces us to absorb knowledge superficially due to slow progress, but instead explains each theorem in detail until we fully comprehend it. I sincerely feel fortunate to be one of Professor Li’s students in his classroom.