Section: New Results

ECS: Encyclopedia of Combinatorial Structures

The Encyclopedia of Combinatorial Structures (ECS, http://algo.inria.fr/encyclopedia/ ) originates as a project in Project-Team Algorithms, with a first release back in 1998. It is an on-line mathematical encyclopedia with an emphasis on sequences that arise in the context of decomposable combinatorial structures, with the possibility to search by the first terms in the sequence, keyword, generating function, or closed form. As such, ECS ambitions to be seen as a young cousin of Sloane's famous Encyclopedia of Integer Sequences http://www.research.att.com/articles/featured_stories/2012_03/201203_OEIS.html?fbid=cibE46xiHwx . The latter lists more general types of sequences, and points to numerous entries in ECS for specific properties. With regard to our software development, ECS has served as a nice testbed for several evolutions of DynaMoW, in particular in 2009 and 2011. This year, F. Chyzak and M. Guesdon ported ECS to the language of the new DynaMoW. Public release is expected soon in 2016, and will please the many users waiting for this new release after the former website was discontinued for technical reasons.