نتایج جستجو برای: perfect ring

تعداد نتایج: 168366  

Journal: :Algebra & Number Theory 2021

Using a local monomialization result of Knaf and Kuhlmann, we prove that the valuation ring an Abhyankar function field over perfect ground prime characteristic is Frobenius split. We show splitting sufficiently well-behaved center lifts to ring. also investigate properties valuations centered on arbitrary Noetherian domains characteristic. In contrast [arXiv:1507.06009], this paper emphasizes ...

2010
MARVIN J. GREENBERG M. J. GREENBERG

0. In [3], Serre has defined the notion of a perfect variety over a field of characteristic p>0. Of course, a perfect variety is, in general, not a variety. The appropriate setting is that of schemes [2]. We show how to construct the perfect closure of a scheme, in particular, of a ring A, of characteristic p. This amounts to showing that the functor 5—>Ylom(A, B) is representable in the catego...

2014

3 Construction of BdR 4 3.1 Witt Vectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Lifting to a Perfect Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.3 Carrying Out the Lifts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Final Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

2008
Iván Brito Jorge Bórquez Luis Alberto Loyola Alejandro Cárdenas Matías López-Rodríguez

The mol-ecule of the title compound, C(23)H(34)O(6), is built up from three fused carbocycles, one five-membered, one six-membered and one seven-membered. The five-membered ring has an envelope conformation, whereas the six-membered ring has a perfect chair conformation and the seven-membered ring has a boat conformation. Intra-molecular C-H⋯O hydrogen bonds together with van der Waals inter-ac...

2009
Sema Öztürk Yıldırım Mehmet Akkurt Nasser Safari Vahid Amani Vickie McKee

In the anion of the title compound, (C(14)H(11)N(4))[AuCl(4)], the Au(III) atom has an almost perfect square-planar coordination. In the crystal structure, an intra-molecular N-H⋯N and intermolecular C-H⋯Cl hydrogen bonds are observed. In addition, there is also a ring-metal inter-action between the pyrazine ring and the Au(III) atom; the distance between the centroid of the pyrazine ring and t...

2001
A. Haily M. Alaoui

If M is a simple module over a ring R then, by the Schur’s lemma, the endomorphism ring of M is a division ring. However, the converse of this result does not hold in general, even when R is artinian. In this short note, we consider perfect rings for which the converse assertion is true, and we show that these rings are exactly the primary decomposable ones.

2015
Gamal A. El-Hiti Keith Smith Amany S. Hegazy Mansour D. Ajarim Benson M. Kariuki

In the title compound, C12H14N2S, the cyclo-hexane ring adopts a chair conformation with the exocyclic C-C bond in an equatorial orientation. The mean plane through the cyclo-hexane ring (all atoms) is twisted from the thia-zolo-pyridine ring system (r.m.s. deviation = 0.013 Å) by 39.57 (6)°. In the crystal, mol-ecules form (100) sheets, although there are no specific directional inter-actions ...

2005
Iosif Bena

a black ring, and found a mismatch between supergravity and the CFT. However, such a comparison should take into account the subtle distinction between the asymptotic charges of the black ring and the charges entering the CFT description. We show that using the correct charges yields perfect agreement.

Journal: :Science 2017
Ze-Xiong Xie Bing-Zhi Li Leslie A Mitchell Yi Wu Xin Qi Zhu Jin Bin Jia Xia Wang Bo-Xuan Zeng Hui-Min Liu Xiao-Le Wu Qi Feng Wen-Zheng Zhang Wei Liu Ming-Zhu Ding Xia Li Guang-Rong Zhao Jian-Jun Qiao Jing-Sheng Cheng Meng Zhao Zheng Kuang Xuya Wang J Andrew Martin Giovanni Stracquadanio Kun Yang Xue Bai Juan Zhao Meng-Long Hu Qiu-Hui Lin Wen-Qian Zhang Ming-Hua Shen Si Chen Wan Su En-Xu Wang Rui Guo Fang Zhai Xue-Jiao Guo Hao-Xing Du Jia-Qing Zhu Tian-Qing Song Jun-Jun Dai Fei-Fei Li Guo-Zhen Jiang Shi-Lei Han Shi-Yang Liu Zhi-Chao Yu Xiao-Na Yang Ken Chen Cheng Hu Da-Shuai Li Nan Jia Yue Liu Lin-Ting Wang Su Wang Xiao-Tong Wei Mei-Qing Fu Lan-Meng Qu Si-Yu Xin Ting Liu Kai-Ren Tian Xue-Nan Li Jin-Hua Zhang Li-Xiang Song Jin-Gui Liu Jia-Fei Lv Hang Xu Ran Tao Yan Wang Ting-Ting Zhang Ye-Xuan Deng Yi-Ran Wang Ting Li Guang-Xin Ye Xiao-Ran Xu Zheng-Bao Xia Wei Zhang Shi-Lan Yang Yi-Lin Liu Wen-Qi Ding Zhen-Ning Liu Jun-Qi Zhu Ning-Zhi Liu Roy Walker Yisha Luo Yun Wang Yue Shen Huanming Yang Yizhi Cai Ping-Sheng Ma Chun-Ting Zhang Joel S Bader Jef D Boeke Ying-Jin Yuan

Perfect matching of an assembled physical sequence to a specified designed sequence is crucial to verify design principles in genome synthesis. We designed and de novo synthesized 536,024-base pair chromosome synV in the "Build-A-Genome China" course. We corrected an initial isolate of synV to perfectly match the designed sequence using integrative cotransformation and clustered regularly inter...

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