5 problems

Let $B_{V,\Psi}$ be an untwisted elliptic algebra, and let its center be denoted by $Z(B_{V,\Psi})$. A filtered deformation induces a trivial deformation of the center when the cor…

Let $B_{V,\Psi}$ be an elliptic algebra, and let a filtered deformation mean a nontrivial filtered deformation of $B_{V,\Psi}$. Let $A^+_M$ denote the Rees algebra associated with…

Let $T$ and $T'$ be elliptic algebras with equal graded quotient rings … A blowup or blowdown is the corresponding birational operation on elliptic algebras described in the paper.…

Exceptional-line projective-dimension conjecture. Then

Let $U_{q,p}(B_l^{(1)})$ be the elliptic algebra with level-$1$ currents $e_j(z)$ and $f_j(z)$, and let ${\cal F}_{\lambda,\xi,\kappa}(\Lambda+\mu,\mu)$ denote the modules appearin…