کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5772094 | 1630436 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the deviation and the type of certain local Cohen-Macaulay rings and numerical semigroups
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
اعداد جبر و تئوری
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In J. Herzog and E. Kunz (1973) [6] it was shown that for any pair (d,t)âNÃN+ with (d,t)â (1,1) there exists a local Cohen-Macaulay ring R having deviation d(R)=d and type t(R)=t. By E. Kunz (1974) [7] the case d(R)=1,t(R)=1 cannot occur. In this paper certain Cohen-Macaulay rings are studied for which there are close relations between deviation, type and embedding dimension. Similar relations for other classes of local rings have been proved in the recent paper by L. Sharifan (2014) [15]. Our relations will be applied to numerical semigroups (or equivalently monomial curves) and lead also to some further cases, generalizing E. Kunz (2016) [8] with ring-theoretic proofs, in which a question of H. Wilf (1978) [16] has a positive answer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Algebra - Volume 478, 15 May 2017, Pages 397-409
Journal: Journal of Algebra - Volume 478, 15 May 2017, Pages 397-409
نویسندگان
E. Kunz, R. Waldi,