Rings of automorphic forms which are not Cohen-Macaulay, II
Rings of automorphic forms which are not Cohen-Macaulay, II
In [2], [3], Eichler posed the question whether or not a ring of automorphic forms (particularly, Hilbert and Siegel modular forms) is Cohen-Macaulay (C.-M.for short).Freitag [4] first gave the negative answer to the question in the case of a ring of Hilbert modular forms of dimension $\geqq 3$ .In our …