Is the material on Eric Weissteins World of Science copyrighted?
Yes. Although science and mathematics are free to all, these pages represent a considerable amount of labor on the part of the author and are copyrighted. Readers are encouraged to use the contents of these pages for education and enjoyment, but these pages may not be copied, mirrored, or reproduced in bulk without permission of the author. Reproduction for commercial purposes is not permitted, nor is use of robots to create archival copies. Note that this site uses a robots.txt file, which should be honored. If you would like a mathematics encyclopedia you can hold in your own two hands, please consider buying the author’s hardcover and/or CD-ROM encyclopedias of mathematics, which contain material similar to that found on this site. In general, honoring copyright statements on the internet will encourage the development of high-quality sites and minimize the clutter of web advertising. Sadly, not everyone abides by copyright symbols (©). Furthermore, some versions of Internet Explore
