Аннотация:Consider a restriction of an irreducible finite dimensional holomorphic representation
of $GL(n+1, C)$ to the subgroup $GL(n, C)$. We write explicitly formulas for generators
of the Lie algebra $gl(n + 1)$ in the direct sum of representations of $GL(n, C)$. Nontrivial
generators act as differential-difference operators, the differential part has order $n − 1$, the
difference part acts on the space of parameters (highest weights) of representations. We also
formulate a conjecture about unitary principal series of $GL(n, C)$.