2 problems

Let $k\in\mathbb{N}$ and let $c_1,\dots,c_k$ be arbitrary constants. For each $i$, let $\{\vec{J}_i\}$ denote the set of vectors satisfying … For $\vec{J}_i$, write…

Let $A$ be the free associative algebra of the system, let $[A,A]$ be its commutator subspace, and write the coefficients of the noncommutative spectral curve as … The induced Lie…