This wordpress site is currently running on an outdated machine along with outdated OS and software. In order for this site to be up-to-date so it can work properly and efficiently, I need to build a new server on a new machine. Unfortunately, due to my on-going battle with cancer, I don’t have resources, time and energy to do that. This made me to decide to cease the operation of this site. No, I am not shutting down this site. This site will remain online but it will no longer be updated with new entries (notes). My writing activity will continue elsewhere though. I opened a new blog site at Blogger. Like my current wordpress site, the new site will have the collection of my online lecture notes on mathematics, physics, and related areas (theoretical computer science, mathematical biology, and mathematical finance) but with a new style. The lecture notes will be focused on ideas, computations, examples, and applications rather than detailed and complex proofs and technicalities. Only short and easy proofs will be included in each lecture. For long, tedious or difficult proofs, sketches of proofs that convey core ideas will be employed. In addition, lecture slides (which summarize the lecture notes) and my lecture videos (each of which has no more than 30 minutes of play time) will be hosted at my Substack site as well as at my YouTube Channel.

My lecture notes at Blogger and lecture videos at Substack and at YouTube will all be available to everybody for free. When ready, I will also have paid subscription option at my Substack site. My paid subscribers will have additional access to exercise solutions, more detailed explanations and discussions on proofs, technicalities and what not, questions and answers, and consultations (guidance) about studying math or physics upon request.

Please join me at my Blogger site, Substack site and YouTube Channel, and if you like what I write and lecture there and think they are helpful for you, also consider being my paid subscriber at my Substack site when it is available.

Note: I am currently away from home undergoing cancer treatments. Unfortunately, I am not properly equipped to make lecture videos for the moment. I will have to wait until I am back home to start making lecture videos.