链接

• https://www.mathcha.io/
• https://jsxgraph.uni-bayreuth.de/wp/index.html
• https://www.geogebra.org/classic

Tools

• JXG Preview
• magma
• PARI/GP

math problem

• http://mathproblems.info/working.php
• https://www.cut-the-knot.org/

math history

• https://mathshistory.st-andrews.ac.uk/Biographies/