Friends, Contributors, Researchers, Students, and Valued Readers

It is with the deepest regret that we must inform you that because of a copyright lawsuit filed by CRC Press against Eric Weisstein, Wolfram Research (the sponsor of MathWorld), and its CEO, Stephen Wolfram, we have been forced to remove our MathWorld web site from public view as of October 23, 2000. We are very hopeful that at some point in the future it will be possible to restore this valuable web resource to full public view.

We would like to offer particular apologies to the many contributors who have made their time and efforts available by contributing material to this web site. You as contributors share in our loss.

And we would like to apologize to the researchers and students who rely on this site for their work and learning, not to mention their homework assignments.

On a personal note, we, the friends and colleagues of Eric Weisstein, ask for your support for him during this troubling time. Eric has a deep personal attachment to the web site, his life's work, and is understandably upset at this development. If you wish to offer words of support for Eric, please send them by email to

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