#16553: Clean IncidenceStructure
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-6.3
Component: combinatorial | Resolution:
designs | Merged in:
Keywords: | Reviewers:
Authors: Nathann Cohen, | Work issues:
Vincent Delecroix | Commit:
Report Upstream: N/A | a5c4dbc9d1b77315d90dd3dd7a8ccea780f59ecf
Branch: public/16553 | Stopgaps:
Dependencies: |
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Comment (by ncohen):
Yo !
> Another question: why steiner triple systems are incidence structure but
quadruple ones are tuples of tuples? It is ugly in the doctest
Just because I hate classes. You can make them !BlockDesign if you like,
Dima will be happy too.
By the way, `is_t_design` is wrong as it is written. Turns out that you
cannot write this function without "knowing" the value of `t`. There is no
such thing as "the largest t such that a design is a `t`-design.
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/16553#comment:21>
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