category of ring 中文意思是什麼
category of ring
解釋
環的范疇-
The company ' s main production flexible graphite packing ring, metal winding pads, high - strength graphite composite pad, and all kinds of metal - coated fiber pad category pan - gen, and other sealing products
本公司主要生產柔性石墨填料環、金屬纏繞墊、高強石墨復合墊、金屬包覆墊及各種纖維類盤根等密封產品。 -
Category of ring
環的范疇 -
In the second chapter, we attain this goal by another route. collecting all short exact sequence and the morphisms among them, we get a new category, call the short exact sequences category crm. we define a global dimension attached to the original ring r from the view of the short exact sequences category cr. m, named the exact projective dimension
在第二章中我們將通過另一種方法,也就是考察所有的短正合列以及短正合列之間的態射,我們得到一個新的范疇,通過對這個范疇(我們稱之為短正合列范疇c _ rm )的一些基本性質的考察,我們定義出與環r相關的同調維數,我們稱它為正合投射維數。
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