M22 graph

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M22 graph, Mesner graph
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Table of graphs and parameters

The M22 graph, also called the Mesner graph

iff they have no terms in common or by deleting a vertex and its neighbors from the Higman–Sims graph.[6][7]

For any term, the family of blocks that contain that term forms an

It is one of seven known

graph spectrum is (−6)21255161,[6] and its automorphism group is the Mathieu group M22.[5]

See also

References

  1. ^ a b "Mesner graph with parameters (77,16,0,4). The automorphism group is of order 887040 and is isomorphic to the stabilizer of a point in the automorphism group of NL2(10)"
  2. ^ a b Slide 5 list of triangle-free SRGs says "Mesner graph"
  3. ^ a b Section 3.2.6 Mesner graph
  4. ^
  5. ^ . Accessed 29 May 2018.
  6. ^ a b Weisstein, Eric W. “M22 Graph.” MathWorld, http://mathworld.wolfram.com/M22Graph.html. Accessed 29 May 2018.
  7. ^ Vis, Timothy. “The Higman–Sims Graph.” University of Colorado Denver, http://math.ucdenver.edu/~wcherowi/courses/m6023/tim.pdf. Accessed 29 May 2018.
  8. ^ Weisstein, Eric W. “Strongly Regular Graph.” From Wolfram MathWorld, mathworld.wolfram.com/StronglyRegularGraph.html.

External links