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How is Diandian (点点) (A cat my family rescued 2 years ago) now?
On February 7, 2022, my family found this poor little kitten in a distressing condition during a heavy rainstorm…
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Cracking the Logic Gates Construction Using the Knowledge from Mathematical Logic
Coding, Computer Science, Introduction, Latex, Logic, Logic Gate, Mathematical Logic, Mathematics, Programming, PythonWhat if I tell you that every complex truth function can be meticulously constructed using just 1 type of logic gates!!??
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Using Raspberry Pi to Build a US VPN Server for My Family in China
Cloudflare, Coding, Computer Science, DDNS, DNS, Github, Great Firewall, Linux, Network, Programming, Raspberry Pi, Server, Software, SSH, Video, VPNAround December 2023, all ChatGPT access node IPs used by our ClashX VPN were blocked by OpenAI. This situation led me to seek alternative methods to restore unrestricted internet access for my family. In this blog post, I’m going to share my experience and detailed process of setting up a Raspberry Pi as a VPN server for my family in China.
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I Switched From Github Pages to WordPress…
Transitioning from one platform to another for your digital presence, especially a blog, is a decision that’s never made lightly. My journey from GitHub Pages to WordPress was guided by a series of revelations and requirements that I believe many content creators might resonate with. In this post, I’ll share why I made the switch, focusing on key aspects such as efficiency, user-friendliness, community support, and interactivity with the audience.
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Competitive Mathematics — Factorization
This article is based extensively on the content of 《数学奥林匹克小丛书》, supplemented by my own insights and reorganized to cover additional topics not addressed in the original text. Therefore, it should be regarded as a newly compiled set of notes rather than a completely original work.
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Why I Don’t Use Chinese Social Media Anymore…
China, Chinese, DDoS Attack, Experience, Freedom of Speech, Github, Great Firewall, Man-on-the-Side Attack, Propaganda, Sensitive Topic, VideoI love China and the culture and people there, as it is where I grew up. However, I am not particularly fond of China’s political environment in certain aspects, especially the excessive control over the internet…
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A guide for preparing for the William Lowell Putnam Mathematical Competition
Are you planning to participate in the Putnam Maths Competition in the future? Come and check it out!
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Why mathematicians choose “A linear subspace must have the additive identity” as one of the condition of the linear subspace but not “A linear subspace must be nonempty” ?
Actually they can do that, but why they don’t? Because from the perspective of modern algebra…
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A simple physical approach to understand the Taylor series
Do you know that the displacement formula with acceleration in one dimension which you had learned in Physics class actually reveals the existence of Taylor series implicitly?
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Intro to the Colemak keyboard layout
The QWERTY layout was designed in the 19th century. Colemak is a modern alternative to the QWERTY and Dvorak layouts, designed for efficient and ergonomic touch typing in English… — www.colemak.com
