#19545: Mathon's pseudocylic strongly regular graphs.
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Reporter: dimpase | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.10
Component: graph theory | Keywords:
Merged in: | Authors: Dima Pasechnik
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Implement a construction by Mathon of s.r.g's with parameters
`((4t+1)(4t-1)^2, 2t(4t(4t-1)-1), t(4t(4t-1)-1)-1, t(4t(4t-1)-1))` given
that
`4t-1` is a prime power and there exists an s.r.g. with parameters
`(4t+1,2t,t-1,t)` from
R. A. Mathon,
Symmetric conference matrices of order `pq^2 + 1`,
Canad. J. Math. 30 (1978) 321-331
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Ticket URL: <http://trac.sagemath.org/ticket/19545>
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