Nigel Ray
The homepage can be accessed here.
Department of Mathematics
University of Manchester
Oxford Road
Manchester
M13 9PL
England
Email: nige@ma.man.ac.uk
Fax: (+44)(0)161 275 5819
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the following papers are available on our server
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chromatic_polynomials_of_partition_systems
hopf_algebras_of_set_systems
posets_of_matrices_and_permutations_with_forbidden_subsequences
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