What's new

The database is extended on an ongoing basis. These changes are not listed here.

2006-01-21 Java 1.1 is not supported anymore. As java 1.4 or newer might redraw incorrectly, it is advised to use java 1.3.
2005-07-19 Super/subclass information and summarized complexity information on webpage of each graphclass
2005-02-27 Sorting order on webpages matches order in applet.
2005-02-01 Added complement classes to the webpage of every graphclass.
2004-08-30 Abbreviate long names in drawing and windows, changed "change name" popup menu item.
2004-08-18 Added filtering of classes on keywords in name/definition.
2004-05-17 Added Recognition problem.
2004-04-02 Faster loading on modern (java 1.3) browsers.
2003-09-09 Printing works. You need at least Java 1.3 to make use of this feature.
2003-05-21 Classnames have changed. Lists of forbidden subgraphs are alphabetized and normalized (e.g. always fork instead of chair or co-kite), unions and intersections of graphclasses have their constituent graphclasses in alphabetical order.
2003-05-06 New web pages publicly accessible.
2003-02-19 New web pages went online.
2003-01-10 Added online help.
2002-12-18 System available again.
2002-11-06 System offline for maintenance.
2002-10-24 Added Domination problem.
2002-08-26 Display not only open but also boundary classes for a problem.
2002-08-26 Use same sorting order in all lists.
2002-07-16 Re-added popup menus for edges.