2 problems

The elliptic DIM algebra is isomorphic to the direct sum of the trigonometric DIM algebra and a Heisenberg algebra. Both algebras carry Hopf algebra structures, with coproducts den…

Let $\mathfrak{g}$ be a Lie algebra with an invertible classical $r$-matrix $r$, let $B\in\Lambda^2\mathfrak{g}^*$ be its inverse, and let $\Omega\in t\Lambda^2\mathfrak{g}^*[[t]]$…