The `AMSFonts' font collection is a set of extra math fonts that supplements the standard set of / math fonts. It includes / packages called amsfonts and amssymb that make it easy to use the extra fonts in a / document. If you don't have the AMSFonts collection already on your system, and would like to use some of the symbols in it, it can be obtained by anonymous FTP from CTAN (see ctan) or from the e-MATH system at e-math.ams.org. It can also be ordered on disk from the AMS Customer Services Department at cust-serv@math.ams.org or 800-321-4267.