Miró-Roig, Rosa M. (Rosa Maria)2009-04-082009-04-0819901088-6826https://hdl.handle.net/2445/7702In [B], Banica considers the problem of determining the integers d such that there are smooth threefolds which are not arithmetically Cohen-Macaulay. Moreover, he gives a partial answer to this question. In this note, using liaison, we will complete his answer.4 p.application/pdfeng(c) American Mathematical Society, 1990Varietats algebraiquesSuperfícies algebraiquesSurfaces and higher-dimensional varietiesSurfacesinfo:eu-repo/semantics/article83244info:eu-repo/semantics/openAccess