We study the Cohen-Macaulay property of triangular graphs
. We show that
are Cohen-Macaulay graphs, and that
are not Cohen-Macaulay graphs, for
. Finally, we prove that over fields of characteristic zero
Key Words: Triangular graphs, edge ideals, Cohen-Macaulay graphs
2010 Mathematics Subject Classification: Primary 13F55,
Secondary 13H10, 05C75.
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