Line and Hyperplane GT-variants
arXiv:2104.10504
Abstract
In this work, we introduce a variant of the Grothendieck-Teichm{ü}ller group, defined in terms of complements of hyperplane arrangements and pro- two-step nilpotent fundamental groups, and prove that it is isomorphic to the absolute Galois group of $\Qbb$.
21 pages; v2: changed title, expository changes