/images/avatar.png

HuaXiangShan

The world will never be the same again after you step into this strange and wonderful garden of thought. And when you look back on this experience many years later, even the things you didn't understand at the time have matured --Samuelson

Convergence: From the Limit of Equations to the Limit of Growth

GPT Summary: This article explores the application and meaning of convergence in the fields of mathematics, probability theory, and economics. Starting from the concepts of limits and convergence in mathematics, it gradually expands to the Law of Large Numbers and the Central Limit Theorem in probability theory, and finally delves into the convergence effect in economics and the convergence tests and club convergence analysis in econometrics.

Faces of Time

This article reflects on an exhibition about portraiture and argues that changes in artistic style mirror the gradual deepening of human self-awareness across time.

HOW TO SLAY A DRAGON

This article discusses a lively and accessible guide to medieval life, highlighting its humor, narrative charm, and the way it makes historical everyday experience more approachable.