You can obtain membership information for SIAM from the SIAM Home Page . However, some services of the Activity Group are free. The Activity Group prints a Newsletter that is mailed from SIAM to all members of the Activity Group. OP-SF NET .
Subscription is free.
OP-SF TALK . This is a listserv for discussions and questions in the general areas of orthogonal polynomials and special functions. Subscription is free. OP-SF WEB . This is the home page for the Activity Group.