Opened 20 months ago

Last modified 3 months ago

#31587 new enhancement

implement spreads in GQ(q,q)

Reported by: Dima Pasechnik Owned by:
Priority: major Milestone: sage-9.8
Component: graph theory Keywords:
Cc: gh-Ivo-Maffei Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

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Description (last modified by Dima Pasechnik)

in #30223 Ivo implemented spreads in GQ(q,q2), but we should also have spreads in GQ(q,q), to get more drgs as in #30337

Alerted on this possibility by Krystal Guo in https://twitter.com/guo_krystal/status/1377295829669662726

Replying to 
@guo_krystal
Having painstakingly entered it into @sagemath
I discovered that it was a graph I knew!
It is GQ(2,2) with a spread deleted.
So it is an antipodal distance regular graph on 15 vertices with {4,2,1;1,1,4}. 3/n
5:24 PM · Mar 31, 2021

Change History (5)

comment:1 Changed 20 months ago by Dima Pasechnik

Description: modified (diff)

comment:2 Changed 16 months ago by Matthias Köppe

Milestone: sage-9.4sage-9.5

comment:3 Changed 12 months ago by Matthias Köppe

Milestone: sage-9.5sage-9.6

comment:4 Changed 8 months ago by Matthias Köppe

Milestone: sage-9.6sage-9.7

comment:5 Changed 3 months ago by Matthias Köppe

Milestone: sage-9.7sage-9.8
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