2 papers
math.HO2025
Binary quadratic forms: modern developments
Ayberk Zeytin
In this work, we offer a historical stroll through the vast topic of binary quadratic forms. We begin with a quick review of their history and then an overview of contemporary alge…
math.GT2018
Mapping class groupoids and Thompson's groups
A. Muhammed Uludağ, Mustafa Topkara, Özge Ülkem +1
We introduce a groupoid ${\mathbf{ΠMG}}}$, called the fundamental modular groupoid, which is a variant of Penner's mapping class groupoid. We study how it relates to the surface ma…