The Spectrum of Abelian Categories and Reconstruction of Schemes

By A. Rosenberg. 2020

57 citations recorded by the source corpus.

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.

Subfields: Computational Theory and Mathematics, Geometry and Topology

View Paper: https://www.semanticscholar.org/paper/eb160551111e88435ab67c2b951f3efe56467487

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In Computational Theory and Mathematics

  1. Martin Brandenburg

In Geometry and Topology

  1. Martin Brandenburg

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