The Spectrum of Abelian Categories and Reconstruction of Schemes
The Spectrum of Abelian Categories and Reconstruction of Schemes
复制标题
阿贝尔范畴的谱与图式的重构
DOI:
10.1201/9781003071730-18
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
A. Rosenberg
中科院分区:
文献类型:
--
作者:
A. Rosenberg
This is a method of and apparatus for forming a trench in the ballast under railroad track, commonly referred to as scarifying, and for grasping new ties, one at a time, positioned on top of the rails, drawing each tie in turn out to one side, positioning it opposite the trench and inserting it, all in a series of coordinated movements in sequence with a minimum, if any, disturbance of the ballast.