In this section, you will find notes on various topics in mathematics. These notes usually complements of original papers or books, with commentaries and explanations. So they are not at all complete exposition of the topics. They will also be in constant change. The emphasis will be more in example and visualization, by using technologies such as HTML-plastex, Threejs, ChatGPT, etc.
Please feel free to contact me if you find any mistakes or if you have any comments or suggestions. I will be very grateful for your feedback.
