Welcome to the Center of Math store!

Digital Textbook Purchasing Instructions

The digital textbooks are PDF. The download is a zip file that should automatically decompress after the download is complete. We recommend using Firefox, Safari, or Chrome to download your file. Occasionally Internet Explorer has problems opening zip files, so Microsoft has a support page, which details the problem and offers workarounds. For Windows users, you will also want to make sure that you have a program installed on your computer such as WinZip to unzip the file. 

To use your digital textbook on an iPad or other device, you will need to first download the file on a desktop or laptop computer. Then you can use iTunes or another program to load the book to the device. We have instructions available on our Support Page

You are given two downloads per purchase. Once you download the book twice, this link will expire. If the link expires and you were not able to access your purchase, please feel free to contact us at info@centerofmath.org and provide us your order number starting with #10000. It would also be helpful for us to know what operating system and web browser you are using, along with any error messages you are receiving.

Return Policy

Print Books
You may return a book within 15 days of delivery, if it has not been read, covers opened, bent or damaged in anyway. We do not refund shipping costs for returned orders. However, we will pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.). 

Digital Books
Because it is theoretically impossible to return an electronic book without guarantee that it hasn't been downloaded for future use, we do not offer refunds. If you have any questions about this policy, please contact us before you purchase an e-book at info@centerofmath.org.

Shipping policy

Products ordered by 10:00 AM Eastern Time, Monday through Friday (excluding holidays) are usually shipped the same day. However, if an item is out of stock, your order may be delayed. We will notify you of any book that is unavailable for immediate shipment. You may cancel any item not being prepared for shipment. You may request a cancellation by contacting us at info@centerofmath.org.

We are located in Cambridge, MA (02139). To estimate shipping time, please visit UPS. For shipments in Massachusetts, often UPS Ground will get the package to you the next day after it is shipped.

We will send you a shipping notification and tracking number via e-mail when your order has shipped. If you haven't received your order by the estimated shipping time, let us know and we'll refund your shipping costs and, if necessary, ship you another copy.

If you are in the Boston area, you can purchase print copies at the Worldwide Center of Mathematics in Cambridge. We are open Monday-Friday between 10am and 4pm ET excluding holidays for print book sales. We are located at 929 Massachusetts Avenue Suite 102 (Floor '01') in Cambridge, MA. 

Frequently Asked Questions

Q: I purchased a digital book, now how do I access it?
You should have received a confirmation e-mail with instructions and a link to download the book. However, you can also log-in to the Center of Math Store and click on "My Downloadable Products" in "My Account". You are given two downloads in case you have multple devices you would like to use the book.

Q: What format are the digital textbooks and what platforms do they work on?

The textbooks are produced as PDFs, which allows us to add a host of new features that are designed to make them more effective learning tools. They are compatible with both Mac and Windows systems, and can be viewed on most tablets using a PDF viewer app. Visit our Tablet Support page for more information.

Q: If I purchase the print textbook, will I still have access to the videos?
You will have access to all of the lecture videos associated with the text by visiting our video page on centerofmath.org or by visiting the Center of Math YouTube page. However, you will not have direct access to the exercise solution problems.

Q: When I try to download the book, it says the file is corrupted.
Occasionally Internet Explorer has problems opening zip files, so Microsoft has a support page, which details the problem and offers workarounds. However, we recommend downloading the file using one of the following web browsers: Firefox, Safari, Chrome. If you are on an iPad or other tablet device, visit our support page for instructions.

Q: I've tried to download the book and was unsuccessful. Now, the link says expired.
If the link says it is expired, it means that you downloaded the file twice. If you were using Internet Explorer, the browser occasionally has problems opening zip files. Please contact us at info@centerofmath.org with you order number.

Q: I purchased the book on a tablet. How do I access the book?
Visit our tablet support page for instructions.

Q: I downloaded the book, but can't find the file on my computer.
If you are not sure where downloaded files save on your computer, you will need to contact a computer-help center on your campus. 

Q: I'm on Windows 7, and tried using multiple web browsers and can still not download my digital textbook.
For Windows 7 customers who purchased a digital product: the download you purchased is a zip file. You may need download a program such as WinZip to unzip the file.

Q: I placed an order, and it seems to have charged my credit card more than once.
If you cancelled your order, entered incorrect billing information, or pressed the "Place Order" button multiple times, there is a chance that your bank or credit put a hold on the funds you were trying to use. If you only received one confirmation e-mail, we will only process your order once. Typically banks will hold the funds for 1-3 business days. Contact your bank or credit card for more information. If you think you might have ordered the book more than once, feel free to e-mail us at info@centerofmath.org.

If you are not satisfied with your purchase, please e-mail us at info@centerofmath.org or call (617) 245-0171 Monday - Friday, 9am - 5pm EST/EDT.