Drinfeld's Grothendieck–Teichmüller conjecture for the motivic Galois group
Let MTM(Z)\mathcal{MTM}(\mathbb{Z})MTM(Z) be the Tannakian category of mixed Tate motives over Z\mathbb{Z}Z, and let G1=Gm⋉U1\mathcal{G}_{1}=\mathbb{G}_{m}\ltimes\mathcal{U}_{1}G1=Gm⋉U1 be its motivic Gal…