About

Edited:   May 15, 2019

Me

My name is Yingkai Liu (Google Scholar). I am currently a senior undergraduate at Nankai University, China. I major in Physics.

With more understanding of physics, I found the theory used to describe a phenomenon is more and more elegant but in the same time complicated. I was happy about the differential equations, impressed by linear algebra, struck by group theory and now mesmerized by topology and differential geometry. I am aware that physics requires much more than just mathematics. In the same time I believe that with more mathematics there will be deeper physics.

As for my current interest, on my CV I wrote:

I am interested in the Topological properties of materials and the phenomenon of integer discreetness arising from continuous symmetry. In a different perspective, I am also interested in how particles subject to relatively simple laws can exhibit novel collective properties. I also like coding and enjoy sharing my thoughts.

Here is my CV (last update: 2018-11-17).

This Site

When I started writing on this website, I wanted to share notes on what I have learned. I benefited a lot from many insightful blogs and now I have something to give back. Watching my notes published on websites also gives me motivation and a strange consolation.

I also realized that this website can be used as a billboard of my professional backgrounds. This is a great proof for what I have learned.

Posts

The posts are at different status.

Status Meaning
Completed This post is considered completed, but I might edit it when I came up with something new.
Writing This post is being actively edited.
Paused This post is considered of low priority. I will come back to this post later.
Archived This post is outdated and probably won’t receive any update.

Sources

This website (source code here) uses these sources:

Module Mainly used in License/ TOS
Particle.js Homepage MIT
Visitor map Homepage, footer TOS
Homepage and color scheme Layout @ homepage, color scheme @ all pages MIT
List of recent post Homepage, Post index MIT
Search Post index, Tags index MIT
Side bar Post, all pages with these elements MIT
Table of content Post BSD-3 or MIT
Markdown vue theme and color scheme Markdown theme @ Post, color scheme @ all pages Apache-2.0
Tags, Tag cloud, Tag page Post, Post index, Tags index MIT, repo here. Tag page inspired by haixing-hu
Font size adjustment Post MIT
comment Post APGL-3.0
404 T-rex game 404 page from Chromium source code, license
Encryption Secret Pages MIT

Additional licensing information can be found here.

I mainly use Typora to write my post.

The Name

I named this website “A Finger Pointing to the Moon”, as in the Buddhism story:

佛告阿难。汝等尚以缘心听法。此法亦缘。非得法性。

若复观指以为月体。此人岂唯亡失月轮。亦亡其指。何以故。以所标指为明月故。

岂唯亡指。亦复不识明之与暗。何以故。即以指体。为月明性。明暗二性。无所了故。

Which has been beautifully put by Bruce Lee:

It’s like a finger pointing away to the moon. Don’t concentrate on the finger or you will all that heavenly glory.

Contact

The best way to reach me is via email: $water$ @ $mail.nankai.edu.cn$