About

Hi, my name is Chia-Min Wei (魏珈民). I am an Econ PhD student at UW-Madison.

Short Notes

Probability & Statistics

• Sufficient Statistics: A brief introduction to sufficient statistic, Factorization Theorem and Sufficiency Principle.
• Martingale: A brief introduction to martingale theory, the convergence of martingales and its applications.
• Basic Concepts in Weak Convergence: An introduction to basic concepts in weak convergence, including the definition of weak convergence, separating class, convergence determining class, Portmantueu's Theorem and Prohorov's Theorem.
• The Wiener Measure and Donsker's Theorem : An introduction to the Wiener measure, its construction and Donsker's Theorem.

Others

• 申請紀錄: 2024 碩博班申請的紀錄。包括自身經歷、選校策略、CV 和 SOP 的撰寫、推薦信，以及致謝。

Teaching

Econ 703 Math Camp (Fall 2025)

• TA Note 1 : General Information, Logic and Proofs.
• TA Note 2 : Metric Space, Cauchy Sequence, Contraction Mapping Theorem.
• TA Note 3 : Sets and Functions, Axiom of Completeness, Bolzano-Weierstrass Theorem, Limit Superior and Inferior.
• TA Note 4 : Topology and Continuous Functions on a Metric Space, Continuous Functions on R (Extreme and Intermediate Value Theorem).
• TA Note 5 : Concave and Convex Functions on R, Left and Right Derivatives, Subgradient, Extreme Points.
• TA Note 6 : Differentiable Functions on R, Big O Little o, First Order Condition, Mean Value Theorem.