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In this paper, we study the capped vertex functions associated to certainzero-dimensional type-$A$ Nakajima quiver varieties. The insertion ofdescendants into the vertex functions can be expressed by the Macdonaldoperators, which leads to explicit combinatorial formulas for the capped vertexfunctions.  We determine the monodromy of the vertex functions and show that it coincideswith the elliptic R-matrix of symplectic dual variety. We apply our results togive the vertex functions and the characters of the tautological bundles on thequiver varieties formed from arbitrary stability conditions.

Capped vertex with descendants for zero dimensional $A_{\infty}$ quiver varieties