Number Theory@ Statistics@

» Ars Mathematica    News and discussions on the mathematical arts.    http://www.arsmathematica.net/

» JISCmail    Mailing lists in mathematics and statistics for the UK academic community.    http://www.jiscmail.ac.uk/mailinglists/category/Maths_&_Statistics.htm

» Javamath-discuss    A general mailing list for discussion about mathematical software development in Java.    http://lists.sourceforge.net/lists/listinfo/javamath-discuss

» Math Forum: Public Discussions    Group topics include general math, education, geometry, software, calculus reform, research and recreations.    http://mathforum.org/kb/forumindex.jspa

» Math Help Forum    A discussion forum for students and teachers of mathematics at school, college and advanced levels, including homework help for students.    http://www.mathhelpforum.com/

» Math is Fun Forum    A discussion forum for K-12 math students and teachers, with a focus on learning and teaching math the fun way.    http://www.mathisfunforum.com/

» Maths is Toothpaste    Mathematics is useless on its own, it only has a function when used with something else (i.e. a toothbrush). An online discussion.    http://mathsistoothpaste.blogspot.com

» Maths-Education    Email forum for those working in mathematics education to share ideas and experiences, and request information.    http://lists.nottingham.ac.uk/mailman/listinfo/maths-education

» Mathstore Electronic Discussions    A list of mailing lists compiled by LTSN.    http://mathstore.ac.uk/etalk/index.shtml

» The CTK Exchange Forums    Discussions on elementary, middle and high school mathematics and mathematics education.    http://www.cut-the-knot.org/cgi-bin/dcforum/ctk.cgi

» The Institute of Mathematics and its Applications Discussion Forums    Discussion of mathematical issues with councillors and members of the UK professional body, open to all.    http://www.ima.org.uk/forums/

» Undernet Math    Topica email list serving the users of the IRC channel #math on the Undernet, for discussion and challenging puzzles.    http://lists.topica.com/lists/undernet-math/

» WebMath    A mailing list for those interested in mathematics on the World Wide Web.    http://west.camel.math.ca/cgi-bin/wcms/webmath.pl

» Yahoo Groups : Erdos    A group for proposing problems, sharing ideas, discussing areas of research and reviewing papers and books of interest. [Requires Yahoo! membership]    http://groups.yahoo.com/group/Erdos/

» Yahoo Groups : maththeorists    Discussions relating to number and mathematics philosophy.    http://groups.yahoo.com/group/maththeorists/

» Yahoo Groups in Mathematics    Mailing lists and discussion groups (including former OneList and eGroups).    http://dir.groups.yahoo.com/dir/Science/Mathematics

» Yahoo Groups: Math For Fun    Focuses on solving challenging math problems.    http://groups.yahoo.com/group/mathforfun/

» Yahoo Groups: Theory-edge    Informal discussion of research in algorithmics, mathematics, and their applications.    http://groups.yahoo.com/group/theory-edge/