کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4596088 1336149 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Balance with flat objects
ترجمه فارسی عنوان
تعادل با اشیاء مسطح
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات اعداد جبر و تئوری
چکیده انگلیسی
When computing derived functors of a functor of two variables there is often balance. This means that these functors can be computed using a resolution of either variable. Now that flat covers are known to exist in many categories, derived functors can be computed using flat resolutions. So it is natural to ask if we have balance in this situation. When the ring is left perfect we get the usual balance. This raises the question of whether these are the only rings where we get balance. In this article we show that if the ring R is commutative and noetherian, then R must be perfect in order to get the desired balance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pure and Applied Algebra - Volume 219, Issue 3, March 2015, Pages 488-493
نویسندگان
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