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Here youíll find free articles and free textbooks on high-school and college mathematics, written by Stan Brown. Youíll also find articles on other interesting subjects, and some free utility software.

Enjoy, and let me know what you think!


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Itís always okay to link to any page in this site, or to print a page for your own personal use.

If you want to copy any material for any purpose, please respect the amount of work Iíve put into these pages and ask permission at the email address below.


I get many requests from people wanting me to sell them link space, or wanting to pay me to place an article of theirs on I have never done that, and I never will.

Youíll see an occasional text link, like the one at the bottom of this page, inviting you to donate a few bucks to help with operating expenses, if you find this siteís information useful. There are no banner ads or click-through ads and no sneaky one-pixel pictures. Nothing is behind a paywall.

Link Exchanges

I link to other sites that are relevant to my topics, especially if they explain something that I donít. I donít link to pages behind paywalls, except for the purpose of documenting a source I drew from.

If you have a link that matches those criteria, please tell me about it. Please explain briefly whatís at the link andóif itís not obviousówhat on my site itís relevant to. Iíll only investigate a link if you give me a reason to.

All the ďAboutĒ Pages

Contact Information

Email: stan (at) BrownMath (dot) com

PayPal ID: stan_paypal (at) fastmail (dot) fm

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