circle on the rings 中文意思是什麼

circle on the rings 解釋
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  • circle : n 1 圓;圓周;圈;環;環狀物。2 圓形場地,馬戲場;(鐵路的)環行交叉口;(體育場的)圓形看臺;(...
  • on : adv 1 〈接觸、覆蓋〉上去;開(opp off)。 turn on the light [radio water gas] 開電燈[收音機、自來...
  • the : 〈代表用法〉…那樣的東西,…那種東西。1 〈用單數普通名詞代表它的一類時(所謂代表的單數)〉 (a) 〈...
  • rings : 吊環
  1. Using universal property, we can define general ( pre ) cover and ( pre ) envelope, such as gorenstein injective ( projective or flat ) ( pre ) cover and ( pre ) envelope, 5 - torsion free ( pre ) cover etc. in a word, problems on ( pre ) over and ( pre ) envelope have aroused considerable debate in the academic circle, which embodies flexible use of tools of homological algebra in studying categories of rings and modules

    而且利用泛性我們又可定義更廣泛意義上的包、蓋問題,例如: gorenstin內射(平坦、投射)包(蓋) , s -無撓預蓋,等等。用這類比內射(平坦、投射)更廣泛意義上的特殊模又能刻畫一些環。總之,包、蓋問題是當今非常活躍的研究課題,體現了同調代數在環模範疇研究中靈活運用。
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