useful links
tools
- JXG Preview
- magma
- PARI/GP
- https://www.mathcha.io
- https://jsxgraph.uni-bayreuth.de/wp/index.html
- https://www.geogebra.org/classic
- latex symbol recognization || latex symbol recognization
- 语料库
- P2P file sharing with webrtc https://zero-share.github.io/ || https://drop.lol/