2022

A Topological Proof of the Insolvability of the Quintic
Lie Algebras, Weyl Groups, and Root Systems
Bruhat Order and Sperner Property
Étale Fundamental Group
Fppf Site, Faithfully Flat Descent, and Fibred Categories
Grothendieck Topology, Sites, and Topoi

2021

Galois Cohomology and Mordell—Weil Theorem

2020

Nine Point Circle and Feuerbach's Theorem
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