Copyright notice and credits

Except where specifically noted otherwise, this document is Copyright © 2002-2008 Darrell Ryan (aah@ryan-usa.com). You may reproduce and distribute all or parts of this document for personal use only, subject to the following conditions:

• No fee is charged or collected. Any party wishing to distribute this document or any part thereof in exchange for a fee, must receive written permission from the copyright holder before doing so. Such permission, if granted, may involve a fee determined by and payable to the copyright holder. Parties this applies to include, but are not limited to, those wishing to include the contents of this document, in whole or in part, in a ``FAQ collection" to be sold.
• It is not used commercially without written permission from the copyright holder.
• This copyright notice is included.
• The content is not altered in any way.
• No on-line copies are made (i.e. not ``hosted'' on other servers.) This is to encourage on-line use of only the most current revision which is located at http://aah.ryan-usa.com/. If you wish to refer to this document in an on-line medium, providing a hypertext link is more appropriate than maintaining a redundant (and possibly outdated) copy.

  A subset of this document is located in the FAQ archives at MIT and authorized mirror sites, and additionally posted periodically to alt.algebra.help and *.answers. These on-line copies are authorized.

All other rights are reserved.