2 problems

Deligne–Ihara conjectures. The embedding $\varPsi_l$ is an isomorphism for every prime $l$; the Lie algebras $\mathfrak g^l_\bullet$ and $\mathfrak D_\bullet$ are free; and their g…

Let $\mathfrak D_\bullet=\bigoplus_{w>2}\mathfrak D_w$ be the stable derivation algebra, a filtered graded Lie algebra over $\mathbb Q$. The conjecture concerns its generators in t…