Catalog of designs¶
This module gathers all designs that can be reached through
designs.<tab>. Example with the Witt design on 24 points:
sage: designs.WittDesign(24) # optional - gap_packages Incidence structure with 24 points and 759 blocks
Or a Steiner Triple System on 19 points:
sage: designs.steiner_triple_system(19) (19,3,1)-Balanced Incomplete Block Design
La Jolla Covering Repository
The La Jolla Covering Repository (LJCR, see 1) is an online database of
covering designs. As it is frequently updated, it is not included in Sage, but
one can query it through
sage: C = designs.best_known_covering_design_from_LJCR(7, 3, 2) # optional - internet sage: C # optional - internet (7, 3, 2)-covering design of size 7 Lower bound: 7 Method: lex covering Submitted on: 1996-12-01 00:00:00 sage: C.incidence_structure() # optional - internet Incidence structure with 7 points and 7 blocks
This module gathers the following designs:
which queries the LJCR.
Implement DerivedDesign and ComplementaryDesign.