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  1. The Development of Group Theory - MacTutor Math History Archives
    Linked essay describing the rise and progress of group theory from the 18th through the 19th centuries, with references (books/articles). more>>

  2. GR Group Theory (Front for the Mathematics ArXiv) - Univ. of California, Davis
    Group Theory preprints, from the U.C. Davis front end for the xxx.lanl.gov e-Print archive, a major site for mathematics preprints that has incorporated many formerly independent specialist archives. Search by keyword or browse by topic. more>>

  3. Group Pub Forum - G. C. Smith
    The community pages for discussing any aspect of Group Theory, the mathematics of symmetry. Group Theory is a branch of algebra, but has strong connections with almost all parts of mathematics. Announcements, books and journals, conference information, archive of GPF email, mathematical resources, research announcements, and the Group Pub Forum Problem Book, where research problems submitted to the forum are stored. more>>

  4. Group Theory - Dave Rusin; The Mathematical Atlas
    A short article designed to provide an introduction to group theory. Group theory can be considered the study of symmetry: the collection of symmetries of some object preserving some of its structure forms a group; in some sense all groups arise this way. History, applications and related fields and subfields; textbooks, reference works, and tutorials; software and tables; other web sites with this focus. more>>

  5. An Introduction to Group Theory - Loren Pomeroy
    An online textbook/tutorial in elementary group theory. Group theory takes an abstract approach, dealing with many mathematical systems at once and requiring only that a mathematical system obey a few simple rules, seeking then to find properties common to all systems that obey these few rules. Contents include: What is Group Theory; Examples of Groups; Housekeeping Theorems; Cayley Tables; Subgroups; Cosets; Lagrange's Theorem; Cyclic Groups and Subgroups; and Permutations. From The Dog School of Mathematics. more>>


Mason error

component stack:   /library/branch.html
code stack:   /var/lib/mason/obj/library/branch.html:208

debug info:   Debug file is '/var/lib/mason/debug/anon/1'.


raw error:

error while executing /library/branch.html:
Server message number=1105 severity=17 state=1 line=1 text=Can't allocate space for object 'keystorage' in database 'catalog' because 'default' segment is full/has no free extents. If you ran out of space in syslogs, dump the transaction log. Otherwise, use ALTER DATABASE or sp_extendsegment to increase size of the segment.
Statement=INSERT INTO keystorage ( keys ) VALUES ( '7642;16594;6011;7400;5139;10856;4227;12652;2572;17119;16753;9525;4245;9225;4250;3910;18462;2512;8399;6012;8576;2001;7584;4244;60359;4242;10026;6302;61145;12936;64989;4231;73151;9569;16316;66492;7285;16389;4090...
Server message number=7101 severity=17 state=1 line=1 text=Unable to allocate new text value, dbid 6.
Statement=INSERT INTO keystorage ( keys ) VALUES ( '7642;16594;6011;7400;5139;10856;4227;12652;2572;17119;16753;9525;4245;9225;4250;3910;18462;2512;8399;6012;8576;2001;7584;4244;60359;4242;10026;6302;61145;12936;64989;4231;73151;9569;16316;66492;7285;16389;4090...
HTML::Mason::Interp::__ANON__('Server message number=1105 severity=17 state=1 line=1 text=Can\'...') called at /usr/lib/perl5/site_perl/5.6.0/Forum/Key.pm line 284
Forum::Key::store('aborted', '/var/lib/mason/obj/library/drmath/sets/high_triangles.html', 'Forum::Key=HASH(0x901b5b8)') called at /var/lib/mason/obj/library/branch.html line 208
HTML::Mason::Commands::__ANON__('passed_args', 'HASH(0x900e06c)', 'tree', 'topics', 'branch', 'group_theory') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Component.pm line 131
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x8f0f6f8)', 'passed_args', 'HASH(0x900e06c)', 'tree', 'topics', 'branch', 'group_theory') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
HTML::Mason::Request::comp('HTML::Mason::Request::ApacheHandler=HASH(0x9050f1c)', '/library/branch.html', 'passed_args', 'HASH(0x900e06c)', 'tree', 'topics', 'branch', 'group_theory') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Commands.pm line 70
HTML::Mason::Commands::mc_comp('/library/branch.html', 'passed_args', 'HASH(0x900e06c)', 'tree', 'topics', 'branch', 'group_theory') called at /var/lib/mason/obj/library/dhandler line 90
HTML::Mason::Commands::__ANON__('start_at', 1, 'num_to_see', 50, 'keyid', 38309631) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Component.pm line 131
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x8e703d0)', 'HTML::Mason::Component::FileBased=HASH(0x8e703d0)', 'HTML::Mason::Component::FileBased=HASH(0x8e703d0)', 'HTML::Mason::Component::FileBased=HASH(0x8e703d0)', 'start_at', 1, 'num_to_see', 50, ...) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
HTML::Mason::Request::comp('HTML::Mason::Request::ApacheHandler=HASH(0x9050f1c)', 'HASH(0x90530ac)', 'HTML::Mason::Component::FileBased=HASH(0x8e703d0)', 'start_at', 1, 'num_to_see', 50, 'keyid', ...) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 159
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 159
HTML::Mason::Request::exec('HTML::Mason::Request::ApacheHandler=HASH(0x9050f1c)', '/library/topics/group_theory', 'start_at', 1, 'num_to_see', 50, 'keyid', 38309631) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 914
HTML::Mason::ApacheHandler::handle_request_1('HTML::Mason::ApacheHandler=HASH(0x8de2afc)', 'Apache=SCALAR(0x904f75c)', 'HTML::Mason::Request::ApacheHandler=HASH(0x9050f1c)', 'HASH(0x905103c)') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 560
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 560
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x8de2afc)', 'Apache=SCALAR(0x904f75c)') called at /etc/httpd/conf/handler.pl line 97
HTML::Mason::handler('Apache=SCALAR(0x904f75c)') called at /dev/null line 0
require 0 called at /dev/null line 0