2 papers
math.AG2026
Sites and Grothendieck Topologies, Sites and Sheaves
Arvid Siqveland
We give the minimum of category theory necessary for understanding the definition and applications of Grothendieck topos. We state the basic properties of sites and sheaves, and gi…
physics.plasm-ph2024
Compact Spin-Polarized Positron Acceleration in Multi-Layer Microhole Array Films
Zhen-Ke Dou, Chong Lv, Yousef I. Salamin +4
Compact spin-polarized positron accelerators play a major role in promoting significant positron application research, which typically require high acceleration gradients and polar…