New Storage Mode of pocket e-books

Please do a test first: Call the Google (not limited to Google) search engine and enter the keyword "section 1.5
Infinitely small.
Calculus: an infinitesimal approach chapter 1st section 1.5 (title: "infinitely small, finite super real number and infinity") takes the priority of search results, you can click this search result to read the content in this section. What does this experiment inspire us?

The advantage of a pocket-sized e-book is that readers can correct the content at any time if they find that the content is incorrect. For example, yesterday, a reader found that we printed the function "function" as "Runction" somewhere in this article, so when we knew it, we would inevitably correct it. There is no such benefit in paper textbooks.

In fact, the principle of this search and storage mode is very simple. It doesn't matter where the content of a pocket-sized e-book is actually stored, or even stored in many places at the same time (different websites can be freely reproduced). The key issue is: the reader has a client "navigation File". The truth is very clear. So what should I do if the data source file is deleted by someone else? We have a "Official Website" as our support, and the search results will not be empty sets.

After the content of this e-book is uploaded, an enterprise team is responsible for daily maintenance work, carefully guarding the Internet calculus Education "position ". Some people may be worried that the maintenance team of this company is busy? Of course, the maintenance team cannot live by drinking and drinking. The specific operation method is that commercial secrets cannot be passed out.

Yesterday, we sent a contact email to J. Keisler, hoping that he could understand and support our late Calculus Teaching Reform (or sports) in China ). We believe that Professor J. Keisler himself has no reason to reject this suggestion.

We need to do a lot of things. However, we are not in a hurry. Because we are confident that the future of calculus must be an infinitely small method, as long as we do our work well. Our goal is very specific and clear. To put it bluntly, we simply recommend an infinitely small calculus textbook to national freshmen. But is it easy to do things? None. You know its extraordinary difficulty. There is no goal in life. If a person does not have a dream, and even does not dare to think about it, what does life mean?

Note: Why is this new storage mode adopted for pocket e-books? Because any website is closed on that day (there is a risk of closing ). We hope that the infinite Calculus study of pocket e-books will survive forever! Because, infinitely small calculus does not belong to any individual or enterprise, and belongs to all mankind.