#19872: regular symmetric Hadamard matrices for n=324
-------------------------------------------------+-------------------------
Reporter: dimpase | Owner:
Type: enhancement | Status: new
Priority: major | Milestone:
Component: graph theory | sage-7.0
Merged in: | Keywords:
Reviewers: | Authors: Dima
Work issues: | Pasechnik
Commit: | Report Upstream: N/A
988214e3f348db7f00d8d5eb282a6636f3b9a61f | Branch:
Stopgaps: | public/JKandJKT
| Dependencies:
-------------------------------------------------+-------------------------
Implements the construction from
Z.Janko, H.Kharaghani, V.D.Tonchev, The existence of a Bush-type Hadamard
matrix of order 324
and two new infinite classes of symmetric designs. Des. Codes Cryptogr.
24(2001), 225-232
and use it's RSHCD of '+' type to build an srg on v=324, k=153. Also, use
it to construct an RSHCD of '-' type and build an srg on v=324, k=152.
--
Ticket URL: <http://trac.sagemath.org/ticket/19872>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
