Contact Information   If you have any problem with patches in this page or comments or anything else to say, you can reach me by e-mail at chappa@math.washington.edu.   I have started to delete automatically all e-mail that is caught by my spam filters (got tired of reading the same subjects over and over). If you wish to contact me and want to make sure that your message will not be removed by my filters, simply add the word Pine in the subject of your message.   No message that has not been spam has been deleted, so even if you do not follow the rule above there is a good chance that I will get your message.